Answer:
can you give us the whole sheet?
Step-by-step explanation:
An article reported that 6 in 10 auto accidents involve a single vehicle (the article recommended always reporting to the insurance company an accident involving multiple vehicles). Suppose 20 accidents are randomly selected. Use Appendix Table A.1 to answer each of the following questions. (Round your answers to three decimal places.)
(a) What is the probability that at most 8 involve a single vehicle?
(b) What is the probability that exactly 8 involve a single vehicle?
(c) What is the probability that exactly 10 involve multiple vehicles?
(d) What is the probability that between 5 and 8, inclusive, involve a single vehicle?
(e) What is the probability that at least 5 involve a single vehicle?
(f) What is the probability that exactly 8 involve a single vehicle and the other 12 involve multiple vehicles?
(a) The probability that at most 8 involve a single vehicle = 0.057
(b) The probability that exactly 8 involve a single vehicle = 0.035
(c) The probability that exactly 10 involve multiple vehicles = 0.117
(d) The probability that between 5 and 8, involve a single
vehicle = 0.056
(e) The probability that at least 5 involve a single vehicle = 1
(f) The probability exactly 8 involve a single vehicle and the other 12 involve multiple vehicles = 0.035
Define probability?Probability is defined as the ratio of favorable outcomes to all other possible outcomes of an event. For an experiment with 'n' number of outcomes, the symbol x can be used to indicate the number of excellent outcomes. The probability formula is as follows:
x/n, where Probability is Favorable Outcomes/Total Results (Event).
Now, P = 0.6
n = 20
x ≅ Binomial (20; 0.6)
P(x) = (nx) Px q n-x
Now, at most 8 involve a single vehicle is:
P (x ≤ 8) = 0.057
Again, exactly 8 involve a single vehicle is:
P (x =8) = 0.035
Now exactly 10 involve multiple vehicles is:
P (x = 10) = 0.117
Similarly, between 5 and 8, involve a single vehicle is:
P (5 ≤ x ≤ 8) = 0.056
The probability of at least 5 involve a single vehicle is:
P (x ≥ 5) = 1
The probability that 8 involve a single vehicle and the other 12 in multiple vehicles is:
P (x = 8) = 0.035
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For a confidence level of 98% with a sample size of 32, find the critical t value.
The critical value for a confidence level of 98% with a sample size of 32 is given as follows:
t = 2.4528.
What is a t-distribution confidence interval?The t-distribution is used when the standard deviation for the population is not known, and the bounds of the confidence interval are given according to the equation presented as follows:
\(\overline{x} \pm t\frac{s}{\sqrt{n}}\)
The variables of the equation are listed as follows:
\(\overline{x}\) is the sample mean.t is the critical value.n is the sample size.s is the standard deviation for the sample.The critical value, using a t-distribution calculator, for a two-tailed 98% confidence interval, with 32 - 1 = 31 df, is t = 2.4528.
(df is one less than the sample size).
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What is 3/16 as a long decimal
\(0.1875\)
\(rounds \: off \: to \: \: 0.19\)
Step-by-step explanation:
\( \frac{3}{16} = \frac{30}{16 \times 10} = \boxed{.1875} \)
Answer:
.1875
Step-by-step explanation:
1. A random sample of 25 customers for lunch at a local restaruant stayed an average of 45 minutes with a standard deviation of 10 minutes. Another random sample of 30 customers for dinners at this restaurant stayed an average of 55 minutes with a standard deviation of 15 minutes. Determine a 95% confidence interval for the difference of the mean time that the customers stayed for lunch and for dinner.
a. (3.35, 16.65) b. (3, 17) c. (3.06, 16.94) d. (-3.35, 16.62) e. (-3, 17)
A 95% confidence interval for the difference of the meantime that the customers stayed for lunch and for dinner the correct option is option a (3.35, 16.65).
Given:
The number of random customers n1 = 25
The number of random customers n2 = 30
x1 = 45, x2 = 55
σx1 = 10, σx2 = 15
Zα12 = Z0.025 = 1.96
95% confidence interval,
= {(x2-x1) ± Zα12 [(σx1)^2/n1 + (σx2)^2/n2]^0.5}
= {(55-45) ± 1.96 [\(10^{2}\)/25 + \(15^{2}\)/30]^0.5}
= {10 ± 1.96(4 + 7.5)^0.5}
= {10 ± 1.96(11.5^0.5)}
= {10 ± 1.96(3.3911)}
= {10 ± 6.6466}
=> (10-6.6466, 10 + 6.6466)
=> (3.35, 16.65)
So, the correct option is a (3.35, 16.65) for the difference of the meantime.
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Find the power of 9↑1. Type your answer using digits.
Answer:
9^1 has a power of 1. it evaluates to 9
Step-by-step explanation:
Harold and Maude plan to take a cruise together, but they live in separate cities. The cruise departs from Miami, and they each book a flight to arrive in Miami an hour before they need to be on the ship. Their travel planner explains that Harold's flight has an 80% chance of making it on time for him to get o the ship and that Maude's flight has a 90% chance of making it on time. Assume that the event of Harold making it on time is independent of the event of Maude making it on time. What is the probability that at least one of Harold and Maude will make it to the cruise
Answer:
98% probability that at least one of Harold and Maude will make it to the cruise
Step-by-step explanation:
Independent probabilities:
When two events are independent, the probability of the two events happening simultaneously is the multiplication of each probability.
Probability that none makes it to the cruise:
Harold's flight has an 80% chance of making it, so 100 - 80 = 20% probability of missing.
Maude's flight has a 90% chance of making it on time, so 100 - 90 = 10% probability of missing.
Both missing: 0.2*0.1 = 0.02.
2% probability of both missing.
Probability that at least one makes it to the cruise:
Either both miss, or at least one makes it. The sum of the probabilities of these events is 100%. So
2 + p = 100
p = 98%
98% probability that at least one of Harold and Maude will make it to the cruise
Solve the following system of equations. 4x + 3y = -5
- 3x + 7y=13
Answer: 13
Step-by-step explanation:
4x+3y=-5 solve x :
4x = -3y + -5 | -3y
1x = -0.75y + -1.25 | : 4
-3x + 7y = 13 solve x :
-3x + 7y = 13 | -7y
-3x = -7y = 13 | : (-3)
Equalization Method Solution: -0.75y+-1.25=2.333y+-4.333
-0, 75y - 1,25 = 2,333y - 4, 333 solve y:
-0, 75y - 1,25 = 2,333y -4, 333 | -2,333y
-3, 083y - 1,25 = -4,333 | + 1, 25
-3. 083y = -3,088 | : (-3, 083)
y = 1
Plug y = 1 into the equation 4x + 3y = -5 :
4x + 3 · 1 | Multiply 3 with 1
4x + 3 = -5 | -3
4x = -8 | : 4
x = -2
So the solution is:
y = 1, x = -2
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A group of 4 friends shares 2 packs of gum equally. There are 8 pieces of gum in
each pack. Which set of equations shows how many pieces of gum, g, each
friend receives?
may be the answer is :4g-2=8 ^-^
but donot depend in this answer it's not sure okay
Estimate 6,976 + 3,983 + 13,560 by first rounding each number to the nearest thousand.
Answer:
Step-by-step explanation:
The thousand mark is the 4th number when going from right to left. So it would be the {6},976. When it comes to rounding, you go "5 and above, give it a shove, 4 and below, let it go. 6,976 rounded to the nearest thousand is 7,000, 3,983 rounded to the nearest thousand is 4,000, 13,560 rounded is 14,000.
7,000 + 4,000+ 14,000 = 25,000
A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40% of these homes are usually left unlocked, what is the probability that the real estate agent can get into a specific home if the agent selects 3 master keys at random before leaving the office?
Answer:
Step-by-step explanation:
Suppose F represents the value that a room is unlocked.
Then, we can assume that the probability of unlocked homes is:
P(unlocked homes) = P(U)
P(unlocked homes) = 40%
P(unlocked homes) = 0.40
Also, let us represent the value of the locked room with G.
P(locked homes) = P(G)
P(locked homes) = (1 - 0.40)
P(locked homes) = 0.60
Let the probability of selecting a correct key be P(S)
It implies that for the agent to use 3 keys, we have a combination of \(^8C_3\) possible ways for the set of keys.
Now; since only one will open the house, then:
P(select correct key) = P(S)
\(P(S) = \dfrac{ (^1_1) (^7_2) }{ ^8_3 }\)
\(P(S) = \dfrac{21}{56}\)
P(S) = 0.375
Finally, for the real estate agent to have access to specific homes supposing the agent select three master keys at random prior to the time he left his office, Then:
P(F ∪ (G∩S) = P(F) + P(G∩S)
P(F ∪ (G∩S) = P(F) + P(G) × P(S)
P(F ∪ (G∩S) = 0.40 + (0.60×0.375)
P(F ∪ (G∩S) = 0.40 + 0.225
P(F ∪ (G∩S) =0.625
hich linear function has the steepest slope?
y = negative 8 x + 5
y minus 9 = negative 2 (x + 1)
y = 7 x minus 3
y + 2 = 6 (x + 10)
The function with the steepest slope is \(y = 7x - 3\).
The correct answer is C.
The linear function with the steepest slope is the one with the highest absolute value for the coefficient of x.
Let's compare the coefficients of x in each of the given functions:
\(y = -8x + 5\)
Slope: -8
\(y - 9 = -2(x + 1)\)
Simplifying, we get \(y - 9 = -2x - 2\)
Rearranging, we have \(y = -2x + 7\)
Slope: -2
\(y = 7x - 3\)
Slope: 7
\(y + 2 = 6(x + 10)\)
Simplifying, we get \(y + 2 = 6x + 60\)
Rearranging, we have \(y = 6x + 58\)
Slope: 6
Therefore, the steepest slope is the \(y = 7x - 3\).
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a worker gets utility from consumption and leisure. he has 24 hours a day to allocate either to leisure or to working at a nominal wage of w dollars per hour. one unit of consumption costs p dollars.
The worker's utility function can be represented as a combination of consumption and leisure. Let x be the number of hours worked per day, and c be the amount of consumption. Then, the worker's utility can be represented as:
U(c, 24-x) = f(c) + g(24-x)
where f(c) represents the utility from consumption, and g(24-x) represents the utility from leisure. The worker faces a budget constraint that states the amount of income they earn from work must equal their spending on consumption:
wx = pc
This constraint can be used to solve for the optimal combination of leisure and consumption that maximizes the worker's utility. By combining the utility function and the budget constraint, the worker's problem can be formulated as a maximization problem:
Maximize U(c, 24-x) subject to wx = pc
This problem can be solved using techniques such as Lagrangian optimization or constraint optimization to find the optimal values of c and x that maximize the worker's utility. The solution will depend on the specific forms of the functions f and g, as well as the values of w and p.
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PLease see attached. This is an algebra question
The solution for the given expression is 16.
Power RulesThere are different power rules, see some them:
1. Multiplication with the same base: you should repeat the base and add the exponents.
2. Division with the same base: you should repeat the base and subctract the exponents.
3.Power. For this rule, you should repeat the base and multiply the exponents.
4. Zero Exponent. When you have an exponent equals to zero, the result must be 1.
First, you apply the Power Rules - Power for \((\frac{2^2x^2y}{xy^3} )^2}\). For this rule, you should repeat the base and multiply the exponents. Thus, the result will be:\(\frac{16x^4y^2}{x^2y^6}\).
After that, you should apply the Power Rules - Division . For this rule, you should repeat the base and subctract the exponents. Thus, the result will be:\(\frac{16x^2}{y^4}\).
Now, you should replace the variable x by 4 and the variable y by 2. Thus, the result will be:\(\frac{16*4^2}{2^4}=\frac{16*16}{16} =16*1=16\)
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Starting salaries of 130 college graduates who have taken a statistics course have a mean of $44,783. The population standard deviation is known to be $10,272. Using 99% confidence, find both of the following:
A.The margin of error:
B. Confidence interval:
A. The margin of error for a 99% confidence interval is $$2,320.75.
B. The confidence interval for the mean starting salary of college graduates who have taken a statistics course is CI = $42,462.25 to $47,103.75
How to find both of the margin of error and confidence interval?PART A.
The margin of error (ME) is determined using the formula:
ME= z ∗ σ/√n
where:
z is the z-score for the desired confidence level
σ is the population standard deviation
n is the sample size
For a 99% confidence level, the z-score is 2.576. The population standard deviation is $10,272, and the sample size is 130.
Substituting these values into the formula, we have:
ME = 2.576 ∗ 10272/√130
ME = $2,320.75
PART B
The confidence interval (CI) is determined using the formula:
CI = \(\bar{x}\) ± ME
where:
\(\bar{x}\) is the sample mean
ME is the margin of error
The sample mean is $44,783, and the margin of error is $2,320.75.
Substituting the values into the formula, we get:
CI= 44783 ± 2320.75
CI = $42,462.25 to $47,103.75
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For the function f(x) = x2 + 3x – 1, which of the following produces the number 27.
o f(5)
o f(2)
o f(3)
o f(4)
Answer:
f(4) is the correct answer which gives the number 27.
solve for the inequality ᵏ⁄₄ ≥ 6
Answer:
k ≥ 24
Step-by-step explanation:
ᵏ⁄₄ ≥ 6
Multiply each side by 4
ᵏ⁄₄ *4 ≥ 6*4
k ≥ 24
Answer:
k≥24
Step-by-step explanation:
k/4≥6
Use the multiplication property of equality by multiplying both sides by 4 to get
k≥24
If this is wrong or if I did something wrong, please tell me so I can learn the proper way, I am just treating this like a normal problem
Thank you
CAN SOMEONE ANSWER THIS!!!!!!!!
Answer:
Step-by-step explanation:
2 now help me :(
The chart below represents the steps in the process of a bill becoming a law. Use the chart to answer the following question.
The image represents the process of a bill becoming a law. It shows a set of parallel lines that merge, then split into two, and then merge again. Moving left to right, the top line has boxes labeled: A, C, E, G, and H. The bottom line has boxes labeled: B, D, F, and I. Boxes A and B, C and D, E and F, H and I, are paired. G is the only box on the top line without a corresponding box on the bottom line. Continuing to move from left to right, the two lines merge into one and have one box labeled J. Then the lines separate into two parallel lines again. The top line is labeled with box K and the bottom line is labeled with box L. The two parallel lines continue to the right where they again merge into one line, with an arrow pointing to a final box labeled M.
© 2011 FLVS
Which section of this chart represents the point where a bill is first debated in subcommittees?
A and B
H and I
C and D
K and L
Based on the description provided, the section of the chart that represents the point where a bill is first debated in subcommittees is: C and D
How to explain the informationIn the given chart, the parallel lines represent the progression of a bill through various stages in the legislative process. The boxes on the top line represent one set of actions or steps, while the boxes on the bottom line represent another set of actions or steps.
Moving from left to right on the chart, the boxes A and B are paired, representing a particular stage in the process. Similarly, the boxes C and D are paired, indicating another stage in the process.
In the context of the question, the stage where a bill is first debated in subcommittees is represented by the boxes C and D.
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A fruit company delivers its fruit in two types of boxes: large and small.
A delivery of 2 large boxes and з small boxes has a total weight of 78 kilograms. A delivery of 6 large boxes and s small boxes has a total weight of 180 kilograms. How much does each type of box weigh?
let's try to understand this.
a fruit company delivers its fruit in two types of boxes: large and small.
DeA group of fruit companies delivers its fruit in two types of boxes: large and small.
You can set x = weight of the large box and y = weight of the small box. Since they tell you 3 large boxes and 5 small boxes have a total weight of 77 kg you can create an equation of 3x+5y = 77. They also tell you that 6 large boxes and 2 small boxes have a total weight of 104 kg so you can write 6x+2y = 104.
Now you have two equations and two unknowns so you can solve using systems of equations.
3x+5y=77
6x+2y=104
You can see that you can easily multiply the first equation by 2 to get a 6x and leave the second equation as is since it also has a 6x so you can subtract the two equations to eventually only have one variable.
6x+10y = 154
-(6x+2y=104)
___________
8y = 50
y = 50/8 = 25/4 kg
Now you solved for the smaller box's weight and you can plug it into any of the two equations above to solve for x.
6x+2(25/4) = 104
6x+25/2=104
6x+25/2 = 208/2
6x = 183/2
x = 183/12 = 61/4 kg (the larger box's weight)
You can check your answer by plugging in these values of x and y into both equations to make sure they still hold.
therefore: x = 183/12 = 61/4 kg (the larger box's weight)
I don’t really understand this anyone here to help
Answer:
1/10 5 2
20 1 1/20
1/2 1/5 10
Step-by-step explanation:
Suppose that a recent poll of American households about pet ownership found that for households with pets, 45% owned a dog, 34% owned a cat, and 10% owned a bird. Suppose that three households are selected randomly and with replacement and the ownership is mutually exclusive. What is the probability that all three randomly selected households own a dog
Answer: 0.091125
Step-by-step explanation:
Given : P(dog) = 0.45
If 3 households are selected randomly and with replacement and the ownership is mutually exclusive.
Then , probability that all three randomly selected households own a dog = \((0.45)^3=0.091125\)
Hence, required probability = 0.091125
The probability that all three randomly selected households own a dog is
0.091125.
Given that,
Suppose that a recent poll of American households about pet ownership found that for households with pets, 45% owned a dog, 34% owned a cat, and 10% owned a bird.Three households are selected randomly and with replacement and the ownership is mutually exclusive.Based on the above information, the calculation is as follows:
\(= 0.45^3\)
= 0.091125
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A mixture requires 4 cups of water for every 7 cups of flour used. How many cups of water should be used with 28 cups of flour
Answer:
16 cups of water
find the 9th term of the geometric sequence. 12,36,108,...
The 9th term of the given sequence is 78732.
The given sequence is 12, 36, 108... is a geometric sequence with a common ratio of 3.To find the 9th term of the given sequence, we will use the formula for the nth term of a geometric sequence, which is given by:
aₙ = a₁rⁿ⁻¹
Here, a₁ = 12 and r = 3.
Therefore, the formula for the nth term becomes:
aₙ = 12(3)ⁿ⁻¹
Now, we need to find the 9th term of the sequence. Hence, n = 9. Substituting the values of a₁ and r, and n in the formula, we get:
a₉ = 12(3)⁹⁻¹= 12(3)⁸= 12(6561)= 78732
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What is 516 expressed as a percent?
Enter your answer as a decimal in the box.
Answer: 516 out of 100 would be 516%
A rectangular garden is to be constructed using a rock wall as one side of the garden and wire fencing for the other three sides. Given that there are 30 meters of fencing available, determine the dimensions that would create the garden of maximum area. What is the maximum possible area?
The dimensions of the garden that create the maximum area are 5 meters by 15 meters, and the maximum possible area is 75 square meters
What is measurement?
Measurement is the process of assigning numerical values to physical quantities, such as length, mass, time, temperature, and volume, in order to describe and quantify the properties of objects and phenomena.
Let's assume that the rock wall is the width of the garden and the wire fencing is used for the length and the other two sides. Let's denote the length of the garden as L and the width as W.
Since we have 30 meters of fencing available, the total length of wire fencing used is:
L + 2W = 30 - W
Simplifying this equation, we get:
L = 30 - 3W
The area of the garden is:
A = LW
Substituting the expression for L from the previous equation, we get:
A = W(30 - 3W)
Expanding the expression, we get:
A = 30W - 3W²
To find the maximum area, we need to take the derivative of A with respect to W and set it equal to zero:
dA/dW = 30 - 6W = 0
Solving for W, we get:
W = 5
Substituting this value back into the expression for L, we get:
L = 15
Therefore, the dimensions of the garden that create the maximum area are 5 meters by 15 meters, and the maximum possible area is:
A = 5(15) = 75 square meters
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1. Solve the following for the variable indicated:
a. x²=36
b. x²=√50
c. x²=√100
Please help me with this math problem I am going to fail if I don’t get this right
Answer:
\(7+3^{2} - 2\) × \(5 < (\frac{3}{4} + \frac{1}{8} )\) ÷ \(\frac{1}{8}\)
Step-by-step explanation:
so <
hope this helps!
the value of polynomial 5x - 4x square +3 when x=1
Step-by-step explanation:
\(5x - 4 {x}^{2} + 3\)
\(5(1) - 4 {(1)}^{2} + 3 \\ 5 - 4 + 3 = 4\)
Step-by-step explanation:
Solution:Given polynomial
5x - 4x² + 3
put x = 1
→ 5(1) - 4(1)² + 3
→ 5 - 4(1) + 3
→ 5 - 4 + 3
→ 8 - 4
→ 4.
Does this graph show a function? Explain how you know.
• A. No; there are y-values that have more than one x-value.
B. No; the graph fails the vertical line test.
• c. Yes; the graph passes the vertical line test.
D. Yes; there are no y-values that have more than one x-value.
A graph that shows a function must pass the vertical line test
The true statement is (b) No; the graph fails the vertical line test.
How to determine if the graph shows a function?
For a graph to show a function, the graph must pass the vertical line test
The given graph do not pass the vertical line test;
This is so because, a line drawn from the x-axis would touch the graph at at least two different points
Hence, the true statement is (b) No; the graph fails the vertical line test.
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What is the value of n 8n-5=139
The value of 'n' is 18 in the given equation 8n - 5 = 139.
We have to find the value of 'n'.
To do so, we need to solve the given equation.
Let us see how we can solve the given equation.8n - 5 = 139
We need to find the value of 'n'.
Let us bring the constant term to the right side by adding 5 to both the sides of the equation.8n - 5 + 5 = 139 + 5On simplifying, we get8n = 144Now, we need to isolate 'n' to find its value.
To do so, we divide both the sides by 8.8n/8 = 144/8On simplifying, we get n = 18
Therefore, the value of 'n' is 18.
Hence, the value of 'n' is 18 in the given equation 8n - 5 = 139.
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