If I Cov(WFC,WFC)=0.0064, what is the Var (WFC)? A. 0.08 B. 0.0064 C. 0.64 D. cannot be determined
Answers
The problem is related to the Covariance of the WFC. The given value is Cov(WFC,WFC) = 0.0064. The task is to calculate the value of Var (WFC).
The formula for calculating the variance of WFC is given by the following formula:
Var (WFC) = E [(WFC - µ) ²]Where E is the expectation operator, WFC is the random variable of the Wells Fargo & Company, and µ is the expected value of the WFC.
To find the variance using the given information, we need to use the formula:
Var (WFC) = Cov(WFC, WFC) + E [WFC] ² - µ ²
Given, Cov(WFC, WFC) = 0.0064
We know that E[WFC] = µ
Therefore, the formula becomes:
Var (WFC) = 0.0064 + E [WFC] ² - µ ²
Since we don't have any information about the expected value µ, we can't calculate the variance.
Hence, the answer is option D, "cannot be determined."
Learn more about Covariance from the given link:
https://brainly.com/question/28135424
#SPJ11
Related Questions
Joni, a college student, has $400 worth of expenses monthly. How much should she save be financially secure?
Answers
Answer:
200 i think sorry if im wrong
Explanation:
53:1
Which of the following is true of unethical behavior?
A. It may cause people to lose trust in you.
B. It may be prevented by creating conflicts of interest.
C. It is always illegal.
D. It is regulated by administrative law.
Please select the best answer from the choices provided
A
B
C
D
Mark this and return
Answers
Answer:
A. It may cause people to lose trust in you.
Explanation:
Unethical behavior is one where an individual behaves in such a way that it is bad for others or an action that may be morally wrong. It is an action that renders the wrong perception of others.
One thing true about unethical behavior is that it can cause people to lose trust in the person. It makes the person look bad and thus add to the dishonesty, the feeling of untrustworthiness in that person.
Thus, the correct answer is option A.
A department store buyer and a manufacturer of food processors entered into a written contract whereby the manufacturer would sell to the buyer 50 of its top-of-the-line models for $100 each. When the delivery arrived on May 15, several days early, the buyer noticed that the food processors were a different model that did not have all of the features as the top-of-the-line model that was ordered. The buyer contacted the manufacturer and told him that he was rejecting the food processors that were delivered to him and expected the manufacturer to send 50 top-of-the-line models immediately. The manufacturer replied that because of a backlog of orders that had not yet been filled, the top-of-the-line models could not be delivered until August 15. Because the department store had contracted with a restaurant to deliver three top-of-the-line models by May 31, the buyer delivered three of the nonconforming food processors along with a promise to replace them with three top-of-the-line models in mid-August. The buyer returned the remaining food processors to the manufacturer.
How much could the department store recover from the manufacturer for the three food processors that it delivered to the restaurant?
A) Nothing, b/c they were resold to another.
B) Nothing, b/c it accepted them knowing they were defective.
C) The difference b/t the market price of the top-of-the-line models and the existing food processors' actual value.
D) The difference b/t the existing food processors' actual value and the cost of the food processors that the department store must provide to the restaurant in mid-August.
Answers
Answer: C. The difference b/t the market price of the top-of-the-line models and the existing food processors' actual value
Explanation:
Based on the information given, the amount that the department store will recover from the manufacturer for the three food processors that it delivered to the restaurant will be the difference between the market price of the top-of-the-line models and the existing food processors' actual value.
do chip credit cards protect against online purchases
Answers
Answer:
Protecting Against Payment Card FraudExplanation:
The chips do nothing to protect against online payment card fraud, which depends on account numbers and passwords rather than the physical cards. As one security expert noted, computers and mobile devices don't have card readers attached.
A critical path chart should be updated _____ as entrepreneurs develop the plan for a business.
Answers
A critical path chart should be updated constantly as entrepreneurs develop the plan for a business.
This process is called gap analysis. Entrepreneurs must act quickly on identified business opportunities to maximize profits. If a potential business owner has multiple ideas for a business, due he should identify the ideas on which to conduct diligence analysis.
Willingness to act is a critical success factor. The willingness to act as an entrepreneur is the first and most important factor for 'budding' and established entrepreneurs. If you're someone who's really afraid to take action, you don't need all the other entrepreneurial success factors.
Funding pattern is one of the most important factors to consider before starting a business. This typically includes capital that can be brought in from savings and funds that can be borrowed.
Learn more about Entrepreneurs here https://brainly.com/question/353543
#SPJ4
In the short run, a monopolistically competitive firm ______. A. will leave the industry if it is incurring an economic loss B. either makes an economic profit or breaks even C. might incur an economic loss D. incurs an economic loss if it fails to produce the quantity at which marginal revenue equals marginal cost
Answers
Answer:
C. Might incur and economic loss
Explanation:
HELP PLEASE, i’ll mark brainliest
3. Shares of stock ABC fell 12%, closing at $42.56. What was the value of the stock before the fall? Round the answer to the nearest cent.
O $51.07
O $47.66
O 354.56
O $48.36
Answers
The company uses the number of jobs as its measure of activity. For example, mobile lab operating expenses should be $2,900 plus $35 per job, and the actual mobile lab operating expenses for February were $4,530. The company expected to work 50 jobs in February, but actually worked 52 jobs.Required: Prepare a flexible budget performance report showing AirQual Test Corporation's revenue and spending variances and activity variances for February. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect Input all amounts as positive values.
Answers
As the company uses the number of jobs as its measure of activity, its flexible budget will change according to the level of activity.
A flexible budget performance report for AirQual Test Corporation's revenue and spending variances and activity variances for February is given below:AirQual Test CorporationFlexible Budget Performance ReportFebruary Activity Revenue and Spending Variances and Activity VariancesFlexible Budget Actual Results Revenue Variance,Spending Variance Activity VarianceNumbe $47,500, $49,400 F $1,900Expenses:Mobile lab operating expenses $4,400 $4,530 None $130Depreciation expense $3,500 NoneRent expense $3,000 NoneUtilities expense $2,300 $2,360 U $60Total expenses $13,200 $13,390 U $190Net operating income $34,300 $35,010 F $710The flexible budget is determined by multiplying the actual level of activity by the budgeted variable costs per unit of activity and adding the budgeted fixed costs. Revenue variance is the difference between actual revenue and budgeted revenue at the actual level of activity. An unfavorable variance occurs when actual revenue is less than budgeted revenue, and a favorable variance occurs when actual revenue is greater than budgeted revenue. In February, AirQual Test Corporation's actual revenue was $1,900 greater than budgeted revenue, which is a favorable variance.The spending variance is the difference between actual expenses and budgeted expenses at the actual level of activity. An unfavorable variance occurs when actual expenses are greater than budgeted expenses, and a favorable variance occurs when actual expenses are less than budgeted expenses. In February, AirQual Test Corporation's actual expenses were $190 greater than budgeted expenses, which is an unfavorable variance.Activity variance is the difference between flexible budget net operating income and static budget net operating income. The activity variance is favorable when the actual level of activity is greater than the budgeted level of activity and unfavorable when the actual level of activity is less than the budgeted level of activity. In February, the actual level of activity was greater than the budgeted level of activity, resulting in a favorable activity variance of $710.To prepare a flexible budget performance report for AirQual Test Corporation, we need to compare the budgeted and actual revenues and expenses based on the number of jobs completed. Here is the report:
1. Revenue:
Expected revenue per job: Not provided
Actual revenue per job: Not provided
Revenue variance: Cannot be calculated without revenue data
2. Mobile Lab Operating Expenses:
Budgeted expenses (50 jobs): $2,900 + ($35 x 50) = $4,650
Actual expenses (52 jobs): $4,530
Spending variance: $4,650 - $4,530 = $120 (F)
3. Activity Variances:
Expected number of jobs: 50
Actual number of jobs: 52
Activity variance: 52 - 50 = 2 jobs (F)
4. Total Variance:
Since revenue information is not provided, the total variance cannot be calculated.
Summary:
Revenue variance: Cannot be calculated
Spending variance: $120 (F)
Activity variance: 2 jobs (F)
In conclusion, AirQual Test Corporation had a favorable spending variance of $120 and a favorable activity variance of 2 jobs for February. However, the revenue variance cannot be calculated due to the lack of revenue data provided in the question.
For search more questions on flexible budget
https://brainly.com/question/25353134
#SPJ11
Based on the given information, we can prepare a flexible budget performance report for AirQual Test Corporation's revenue and spending variances and activity variances for February.
Firstly, let's calculate the flexible budget for February using the given formula:
Flexible budget = Total fixed costs + (Variable cost per unit x Actual units of activity)
Mobile lab operating expenses = $2,900 + ($35 x 52) = $4,820
Now, let's compare the actual results with the flexible budget to calculate the variances:
Revenue variance = Actual revenue - Flexible budget revenue
There is no information given about revenue, so we cannot calculate this variance.
Spending variance = Flexible budget - Actual expenses
Spending variance = $4,820 - $4,530 = $290 (F)
This indicates that the company spent $290 less than what was budgeted for mobile lab operating expenses in February.
Activity variance = Flexible budget - Budgeted amount
Activity variance = $4,820 - ($2,900 + ($35 x 50)) = $235 (U)
This indicates that the company performed 2 more jobs than what was budgeted for in February, leading to an unfavorable activity variance of $235.
Overall, the company spent less than what was budgeted for mobile lab operating expenses, but performed more jobs than what was budgeted for, leading to an unfavorable activity variance.
to learn more about: flexible budget
https://brainly.com/question/25353134
#SPJ11
pls help me
1. What is the count number of the statement?
2. Was there any check card activity? If so, how many transactions were there, and what was the total amount?
3. Were there any service charges? If so, what was the total amount?
4. What is the total of all withdrawals (checks, ATM transactions, check card transactions, service charges)?
Answers
Answer:
lol it is du green one lololol dont tell on me
Suppose you work for a bank and are responsible for determining whether you should give someone credit. Create a list of the top three questions you would
ask prospective borrowers and post them to the discussion board. Make sure to explain why you think these three questions are important in determining
whether or not a potential customer is a good credit risk.
Answers
Answer:
-How much money do you need?
-How much income do you make?
-How much debt do you have?
Explanation:
The top three questions that I would ask prospective borrowers are:
-How much money do you need?
This question allows the lender to know the amount of money the borrower requires and this is crucial to make an evaluation with the income and debts to determine if the lender would approve the loan. For example, a borrower may need an amount that he can easily pay back with his salary.
-How much income do you make?
This question is important to the lender because it allows to find out if the borrower's income would allow him/her to make the monthly payments which decreases the risk.
-How much debt do you have?
It is important to know the amount of debt the borrower has because the higher amount of debt he/she has, it would be harder to pay the loan and evaluating this allows to decrease the risk of the borrower not paying back.
what term best describes the pridiction of the number of items a company will sell for any given commodity
Answers
The optimal market prices best describe the prediction of the number of items a company will sell for any given commodity.
What is Ideal Cost?
The ideal cost is that price tag at which the absolute benefit of the dealer is expanded. At the point when the cost is too low, the vender is moving countless units however isn't acquiring the most elevated conceivable total benefit.
For what reason is ideal cost significant?
The ideal cost is that perfect balance where it is feasible to get great benefits as indicated by the item or need that we offer. This is vital for any individual who is committed to a business action since it is a moderately basic method for getting improved results.
How would you work out ideal evaluating methodology?
Do an estimating investigation to see what they charge for comparative items and how regularly they change the cost (e.g., through limited time limits). While you surely don't have any desire to go far out of reach with your evaluating technique, you don't be guaranteed to have to offer the least cost.
Learn more about optimal market prices here:
https://brainly.com/question/24877850
#SPJ4
What is the percentage of Internet searches conducted via mobile phones?
89%
77%
over 50%
under 40%
Answers
Answer:
Over 50%
Explanation:
Globally, 68.1% of all website visits in 2020 came from mobile devices—an increase from 63.3% in 2019
All balance sheet items on a common sized balance sheet are constructed by dividing each balance sheet item by what number to create the percentage?
Answers
He common size balance sheet formula takes a line item divided by the base amount times 100 for a given period. For the balance sheet, line items are typically divided by total assets. A typical size balance sheet provides for easy analysis of the relative percentages of each asset, debt, and equity account.
Any single asset line item is compared to the total asset value. Similarly, any single liability is compared to the total amount of liabilities, balance sheet, and any equity account is compared to the whole value of equity. As a result, each major account classification will equal 100%, because all lesser components will add up to the major account classification.
To learn more about asset, click here.
https://brainly.com/question/14826727
#SPJ4
You have a chance to buy an annuity that pays $3,300 at the beginning of each year for 3 years. You could earn 5. 5% on your money in other investments with equal risk. What is the most you should pay for the annuity?.
Answers
At most, what you should pay for the annuity is $8,903.18.
What should you pay at most for the annuity?In order to determine the required value, the present value of the annuity should be determined. The present value is the sum of discounted cash flows.
Discounted cash flow from year 1 to 3 = (3300 / 1.055) + (3300 / 1.055²) + (3300 / 1.055³) = $8,903.18
To learn more about present value, please check: https://brainly.com/question/25748668
A binding price ceiling is a mandated _______.
A. maximum price above the market equilibrium price
B. minimum price above the market equilibrium price
C. maximum price below the market equilibrium price
D. minimum price below the market equilibrium price
Answers
A binding price ceiling is a mandated "maximum price below the market equilibrium price."
This is because a binding price ceiling is a point at which the price of certain commodities can not rise above the market equilibrium price.
The binding price ceiling is usually set by the government rather than the force of demand and supply.
The binding price ceiling has negatives, such as leading to a shortage of supply.
Hence, in this case, it is concluded that the correct answer is option C.
"maximum price below the market equilibrium price."
Learn more here: https://brainly.com/question/14689852
Answer:
I took the quick check. brainliest would be nice
Explanation:
1: C- maximum price below the market..
2:C- producers from low market..
3: C- led to a shortage as prices are kept from rising....
4: D- a price ceiling of 1,000
5: A- the surplus resulting from the price floor...
(this might sound like a silly question)
How have stuffed animals changed our lives? (make our lives better)
Answers
Having stuffed animals have indeed changed human lives and made them better by providing them with a sense of comfort and security.
What are the benefits of stuffed animals?Stuffed animals seem to have become an integral part of the lives of children as they are seen as companions and playthings by these children to keep from being bored and to have another source of friendship.
Stuffed animals are not limited to helping children alone however, because there are adults who enjoy having the company of stuffed animals for a variety of reasons ranging from cuddling to proof of affection from a loved one.
Some might think that it is silly to assume that stuffed animals have made human life better but they would be wrong. Research has shown that people who use stuffed animals feel a sense of comfort and safety when they are around these animals which is hugely important.
Find out more on stuffed animals at https://brainly.com/question/10950816
#SPJ1
(co 5) a company claims that its heaters last less than 5 years. write the null and alternative hypotheses.
Answers
The null hypothesis for this scenario would be that the company's heaters last 5 years or more. The alternative hypothesis would be that the company's heaters last less than 5 years.
Answer in detail-
Null hypothesis (H0): The company's heaters last 5 years or more (H0: μ ≥ 5 years)
Alternative hypothesis (H1): The company's heaters last less than 5 years (H1: μ < 5 years)
Here, μ represents the average lifespan of the company's heaters. The null hypothesis assumes that the heaters last at least 5 years, while the alternative hypothesis tests the company's claim that their heaters last less than 5 years.
To know more null hypothesis Alternative hypothesis https://brainly.com/question/25263462
#SPJ11
depreciation 5%on furniture rs40,000
Answers
Answer:
38,00
Explanation:
10 percent of 40,000 is 4,000
5 percent=2,000
40,000-2,000=38,000
Answer:
rs38,000
Explanation:
1-0.05=0.95
40,000 x 0.95= 38,000
True or False: Stores should train employees on how to spot shoplifters.
a.true
b.false
Answers
Answer:
a
Explanation:
need the text
Answer:
True because there are so many people shoplifting now and no one can tell who is shoplifting.
when the price of surfboards drops bt 5%, the quantity demanded changes by 20%. you know that the price of elasticity of demand for surboards is
Answers
When the price of scooters drops by 5%, the quantity demanded changes by 20%. You know that the price elasticity of demand for scooters is: elastic.
The elasticity of demand alludes to the adjustment of demand when there is an adjustment of another financial component, like cost or pay.
Demand is thought of as inelastic assuming demand for a decent or administration stays unaltered in any event, when the cost changes,
Versatile products incorporate extravagance things and certain food and refreshments as changes in their costs influence demand.
Inelastic merchandise might incorporate things, for example, tobacco and professionally prescribed drugs as demand often stays steady regardless of cost changes.
Inelasticity of demand is obvious when demand for a descent or administration is static when its cost or other component changes,
Inelastic items are normally necessities without satisfactory substitutes. The most well-known merchandise with inelastic demand are utilities, physician recommended medications, and tobacco items.
to know more about elasticity of demand click here:
https://brainly.com/question/1048608
#SPJ4
The complete question is:
When the price of scooters drops by 5%, the quantity demanded changes by 20%. You know that the price elasticity of demand for scooters is:
A: unitary elastic
B: inelastic
C: elastic
What you don’t want to do when using job boards is __________________ endlessly. To prevent that from happening, you should first create a __________________ describing you, so that recruiters can find you. You should also use the platform’s features to set up __________________, using filters for the types of jobs you’re interested in. The alerts will notify you when there’s a potential match. Although job boards are by nature impersonal, you should aim to make personal connections by introducing yourself to the __________________ for an open role or find someone you already know at the company who can introduce you. If there’s a company you’d love to work for that is hiring in other areas, it can’t hurt to reach out, unsolicited, and see if they might be hiring for your role soon. And any time you upload a resume, be sure it is __________________ and tailored toward the job posting itself.
Answers
Make connections with both new and old individuals to locate your future career. In fact, networking is the greatest way to get a job, according to magazines like Payscale, The Balance, SHRM, The Muse, and others.
How can you utilize job boards to discover your next job in these 6 clever ways?Make connections with both new and old individuals to locate your future career. In fact, networking is the greatest way to get a job, according to magazines like Payscale, The Balance, SHRM, The Muse, and others.
There are appropriate and inappropriate methods to utilize traditional job boards, but this does not imply that job searchers shouldn't use them in their search.
The following are six sage ways to use job boards:
Create a profile- Having a profile set up enables recruiters to find you and get in touch with you for interviews.Create alerts- Don't waste time poring over job advertisements to find the one you should apply for.Introduce yourself out front.- By getting in touch with the hiring manager directly by phone or email, you can reduce your chances of being overlooked by HR.Find someone you can introduce to others.- Make contact with anyone you know who may be able to put you in touch with a contact at the firm you want.Post a résumé that is brand- and keyword-rich- Make sure your resume is "keyword rich" before applying for a position via a job posting. Use words and phrases that are relevant to the position and field for which you are applying."Fire is where there is smoke,"- Consider how recruiting in your immediate region may be impacted if you observe hiring activities at a firm.Learn more about job advertisements: https://brainly.com/question/18311790
#SPJ1
Government actions taken to mange a country’s money supply are called ————-policy
Answers
Answer:
Government actions taken to mange a country’s money supply are called ——Monetary——-policy
Question
Government actions taken to mange a country’s money supply are called ————-policy
Answer
MonetaryExplanation
Monetary is a government actions that taken to manage a countries by supplying money.
#LearnwithBrainly
Which loan created a habit where the borrower kept coming back to request an extension?
Answers
Answer:
Extension proposals are not rare because of the buyer's perspective of bridging finance as well as the explanations for both the requirements can indeed be broad. The much more common explanations are.
Explanation:
It has required longer than planned to secure planning approvals. When a transaction has been negotiated, the borrower awaits an exchange of contracts. Additional resources as well as time are needed by the creditor to accomplish his project. Refurbishment analysis was suddenly postponed.Before actually refinancing the debt, the creditor waits for something like a new lender to conclude his thorough research. Throughout the final moment, the buyer of the creditor's property backs out, causing the borrower to bring the estate back into the marketplace. Throughout the last minute, the previous buyer refinancing the property backs out, obliging the creditor to find some mortgage company.It will be able to skip a set number of initial payments if you get a loan extension. Because of the buyer's perspective of bridging extension, finance proposals are common, and the explanations for both demands can be quite extensive.
Obtaining planning approvals has taken longer than anticipated.The borrower awaits the exchange of contracts after a transaction has been negotiated. The creditor will require additional money as well as time to complete his project.The investigation of refurbishment was abruptly postponed.The creditor waits for something like a new lender to finish his or her comprehensive research before refinancing the debt.The buyer of the creditor's property backs out at the last minute, forcing the borrower to relist the property on the market.The prior buyer refinancing the property backs out at the last minute, forcing the creditor to locate another mortgage provider.For more information related to borrower's habits on extension requests, refer to the link:
https://brainly.com/question/3537105?referrer=searchResults
Maria deposits her paycheck each week in a checking account. She plans to buy a car in the next year, so she decides to start saving $100 each month to pay for it. She does not want to have to remember to make that deposit each month. What savings instruments could help Maria reach her goal? Check all that apply. Series I savings bonds Series EE savings bonds a regular savings account a 24-month certificate of deposit a money market account with a $100 minimum deposit
Answers
Answer:
a regular saving accounts
a money market account with a $100 minimum deposit
Explanation:
i got right
Maria deposits her paycheck each week in a checking account. She plans to buy a car in the next year, so she decides to start saving $100 each month to pay for it. She does not want to have to remember to make that deposit each month. Savings instruments could help Maria reach her goal are -
A regular savings account a 24-month certificate of depositA money market account with a $100 minimum depositWhat is deposit?Deposit is a sum of money paid into a bank or building society account.
What is a paycheck?Paycheck is a salary or wages cheque made out to an employee.
What are savings?Savings are income not spent, or deferred consumption.
To learn more about deposits and savings refer
https://brainly.com/question/13198330
#SPJ2
In economics, the factors of production describe:
A.
the growth in an economy's productivity over time.
B.
the total value of all money circulating in the economy.
C.
the economic elements required to produce goods.
D.
the different ways world economies are organized.
Answers
In economics, the factors of production describe C. the economic elements required to produce goods.
What are factors of production ?Factors of production include land, labor, capital, and entrepreneurship. Land refers to natural resources used in production, labor refers to the workforce involved in production, capital refers to the physical and financial resources used in production, and entrepreneurship refers to the innovation and risk-taking involved in production.
The factors of production are critical to understanding how goods and services are produced and how resources are allocated in an economy. They are an important part of economic analysis and are studied in fields like microeconomics and macroeconomics.
Find out more on factors of production at https://brainly.com/question/16755022
#SPJ1
In one or two sentences, explain why people will do less of an activity when the marginal costs are greater than the
marginal benefits.
Answers
Answer:
Marginal cost is defined as the additional cost incurred in adding a unit of product or service.
Marginal benefit is defined as the additional satisfaction or utility that the individual receives from consuming the added unit of product or service.
In every endeavor, we weigh the benefit and cost of a certain product, course of action or service. We aim to get the most out of every product or decision. We are driven to reach maximum profit at a minimum cost. Thus, when the marginal cost is greater than the marginal benefit, people will do less of an activity because it is not profitable.
Explanation:
which of the following should NOT be included when interpreting a bank statement?
A. account activities
B. statement date
C. Account summary
D. information from a different account
Answers
The information that should NOT be included when interpreting a bank statement is option D which is information from a different account.
What is bank statement?A bank statement can be described as a statement that display a list of all transactions with regards to the bank account over a set period, usually monthly.
It should be noted that , information that should NOT be included when interpreting a bank statement is information from a different account.
Learn more about bank statement on:
https://brainly.com/question/15525383
#SPJ1
there is no right or wrong answer
Answers
In a paper manufacturing company, a machine is used to press wet fiber web into a continuous roll of paper. this machine does not create a constant pressure on wet fiber web and final sheets of papers have different thickness which is uniformly distributed between 0.004 and 0.015 inch. let x denote the thickness of the sheet of paper. determine the following: (a) mean and variance for thickness of each paper sheet. round your answer to six decimal places (e.g. 98.765432) e(x) 0.0095 83 v(x) (b) proportion of paper sheets which are less than 0.0070 inch thick. round your answer to three decimal places (e.g. 98.765) p 0.273 (c) thickness exceeded by 35 percent of the paper sheets. round your answer to four decimal places (e.g. 98.7654 thickness exceeded by 35 percent of the paper sheets is.
Answers
The thickness exceeded by 35 percent of the paper sheets is approximately 0.0094 inch
A) mean and variance for thickness of each paper sheet will be 0.00084025 inch.
B) Proportion of paper sheets less than 0.0070 inch thick will be 0.27307692308.
C) Thickness exceeded by 35 percent of paper sheets will be 0.0094
(a) Mean and Variance:
The given information provides us with the probability density function (PDF) of the thickness of each paper sheet, denoted as x. From the given data, we have:
Mean (μ) = 0.0095 inch (given as e(x))
Variance (σ^2) = [(0.015 - 0.004)^2] / 12 = 0.00084025 inch^2 (calculated using the formula for variance of a uniform distribution)
Therefore, the mean thickness of each paper sheet is 0.0095 inch and the variance of the thickness is 0.00084025 square inches.
(b) Proportion of paper sheets less than 0.0070 inch thick:
To find the proportion of paper sheets that are less than 0.0070 inch thick, we need to calculate the cumulative distribution function (CDF) at x = 0.0070 inch. The CDF of a uniform distribution is given by the formula:
CDF(x) = (x - a) / (b - a), for a <= x <= b
where a and b are the lower and upper limits of the uniform distribution, respectively.
Plugging in the values, we get:
CDF(0.0070) = (0.0070 - 0.004) / (0.015 - 0.004) = 0.27307692308
Therefore, the proportion of paper sheets that are less than 0.0070 inch thick is approximately 0.273 (rounded to three decimal places).
(c) Thickness exceeded by 35 percent of paper sheets:
To find the thickness that is exceeded by 35 percent of the paper sheets, we need to find the inverse of the CDF at 0.35. In other words, we need to find the value of x for which CDF(x) = 0.35.
Using the inverse CDF formula, we get:
x = a + (b - a) * CDF^-1(0.35)
Plugging in the values, we get:
x = 0.004 + (0.015 - 0.004) * 0.35 ≈ 0.0094
Therefore, the thickness exceeded by 35 percent of the paper sheets is approximately 0.0094 inch (rounded to four decimal places). Please note that rounding may introduce some error, so it's important to use the exact values in any precise calculations. Also, it's always recommended to verify the results using appropriate statistical software or consulting with a qualified statistician for accurate and reliable results.
To know more about thickness
https://brainly.com/question/11669043
#SPJ4
We have a part loaded in plate bending and we would like to
choose a material from the list using Ashby charts. We need to
minimize the weight and cost, while avoiding failure from exceeding
the requi
Answers
Ashby charts can be used to select a material for plate bending that minimizes weight and cost while meeting the required strength criteria.
To choose a suitable material for the plate bending application that minimizes weight and cost while meeting the required strength criteria, Ashby charts can be a helpful tool. Ashby charts, also known as material property charts, provide a visual representation of material properties, allowing for easy comparison and selection.
To utilize Ashby charts, follow these steps:
1. Identify the specific requirements for the plate bending application, such as the desired strength, stiffness, and other performance criteria.
2. Consult the Ashby charts, which categorize materials based on their properties and performance characteristics. The charts typically include parameters like strength, density, cost, and other relevant factors.
3. Look for materials that fall within the desired range of properties. In this case, prioritize materials that offer high strength-to-weight ratios to minimize weight while maintaining sufficient strength. Additionally, consider the cost aspect and aim for materials that offer a balance between performance and cost-effectiveness.
4. Evaluate the shortlisted materials for their specific applications. Consider factors such as fabrication processes, availability, durability, and any additional requirements specific to the plate bending process.
5. Compare the potential materials based on their weight, cost, and ability to meet the required strength criteria. Select the material that offers the most favorable combination of these factors.
It is important to note that the suitability of a material goes beyond Ashby charts alone. Additional considerations, such as compatibility with the plate bending process, environmental factors, and industry regulations, should also be taken into account.
Overall, by using Ashby charts to compare materials based on weight, cost, and strength, you can make an informed decision to select a material that optimizes performance and cost-effectiveness for the plate bending application while avoiding failure.
To learn more about Ashby charts refer here:
https://brainly.com/question/30059308
#SPJ11