Choose the statement that is FALSE.
A) A 95% confidence interval is wider than a 90% confidence interval
B) When estimating the standard deviation in calculating confidence intervals, make sure you use the t tables.
C) Reducing the variation of a process will increase the width of a given Confidence Interval relative to that process.
D) When sampling for means and thinking about the Central Limit Theorem, the n should always be >30.
Answers
The statement that is FALSE is Reducing the variation of a process will increase the width of a given Confidence Interval relative to that process.
As the confidence level increases the width of the confidence interval also increases. A larger confidence level increases the chance that the correct value will be found in the confidence interval, so option A is true
When estimating the standard deviation in calculating confidence intervals, make sure you use the t tables, we need the t table to estimate SD, so option B is true
A larger sample size or lower variability will result in a tighter confidence interval with a smaller margin of error. A smaller sample size or a higher variability will result in a wider confidence interval with a larger margin of error.
So option c is false, the crrect option is C
Therefore, The statement that is FALSE is Reducing the variation of a process will increase the width of a given Confidence Interval relative to that process.
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Related Questions
At its highest,the elevation of a county is 5,776 feet above sea level at its lowest point the elevation of the county is 9 feet below sea level
Answers
5,776-(-9)
Positive
5,785
Write an integer that represents the elevation of county feet below sea level.
The town of butler, nebraska, decided to give a teacher-competency exam and defined the passing scores to be those in the 70th percentile or higher. The raw test scores ranged from 0 to 100. Was a raw score of 82 necessarily a passing score? explain.
Answers
Based on the raw score of 82, and the 70th percentile passing, we can infer that as regards 82 being a passing score, No, it might have a percentile rank less than 70.
Is 82 a passing score?The passing score is one that is in the 70th percentile or higher. This means that the raw score that a student gets needs to be considered higher than 70% of the rest of the scores.
There is a chance that the exam was so easy that most people got good scores. If that were the case, then a score of 82 can be below the 70th percentile which means that the candidate would not pass.
Options for this question are:
Yes, since a score of 82 is higher than 70.No, it might have a percentile rank less than 70.No, it might have a percentile rank greater than 70.Yes, it might have a percentile rank less than 70.Find out more on percentile rank at https://brainly.com/question/24245405
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Find the perimeter of the rectangle, in feet.
(look at the picture.)
Answers
Answer:
8 1/3ft
Step-by-Step Explanation:
Ava bought a rectangular rug for her hallway. The rug is 23 yards wide and 234 yards long. What is the area of the rug?.
Answers
Answer:
5,382 yards
Step-by-step explanation:
To find the area, just multiply the width and length together. Don't forget the unit!!
EASY Math Homework EASY
Answers
1a) 2x + 3y = 24
To solve this first equation, plug in provided values until you get a true statement. In this case, option 2 is correct.
2(3) + 3(6) = 24
6 + 18 = 24
24 = 24
1b) y > x + 2
To solve this first equation, plug in provided values until you get a true statement. In this case, option 1 is correct.
7 > 4 + 2
7 > 6
1c) x - 3y ≤ 5
To solve this first equation, plug in provided values until you get a true statement. In this case, option 3 is correct.
0 - 3(7/2) ≤ -2
0 - 10.5 ≤ -2
True
1d) Needs options
Answer:1a) 2x + 3y = 24 is (3,6)
1b) y > x + 2 is (7,4)
1c) x - 3y ≤ 5 is (0,-2)
1d) what are the options?
Step-by-step explanation:
one angle of a triangle measures 80° more than the smallest, while a third angle is twice the smallest. whats the measure of each angle?
Answers
Answer: The measure of each angle is 105°, 50°, and 25°.
Step-by-step explanation: The first step in solving this is writing down what you know.
In the phrase it tells you that "one angle of a triangle measures 80 more than the smallest", so we can say that one angle = 80 + smallest angle.
This can be simplified more to x = 80 + y
x = One Angle
y = Smallest Angle
Then if we continue with the phrase it says "a third angle is twice the smallest", so we can say that a third angle = 2(Smallest Angle).
This can be simplified more to z = 2(y)
z = Third Angle
We also know that a triangles angles add up to 180°, so we know x + y + z = 180.
So, with these equations we can now solve for x, y, and z.
The easiest way would be to simply just plug in x and z straight into the 180 equation as follows.
x = 80 + y
z = 2(y)
180 = x + y + z
180 = (80 + y) + y + (2y)
180 = 80 + 4y
100 = 4y
y = 25
Then we can use y to solve for the other two equations.
z = 2(25) x = 80 + 25
z = 50 x = 105
After completing that you are left with the three angles of the triangle, 25, 50, and 105.
Ray created the list of factors for 48 below.48: 1, 2, 3, 4, 6, 7, 8, 12, 16, 24, 48Which number should be removed from his list to make the list accurate?371648Mark this and returnRay created the list of factors for 48 below.48: 1, 2, 3, 4, 6, 7, 8, 12, 16, 24, 48Which number should be removed from his list to make the list accurate?371648
Answers
Answer:
Ray : only 7
Step-by-step explanation:
1 x 48 = 48
2 x 24 = 48
3 x 16 = 48
4 x 12 = 48
6 x 8 = 48
7 x 6 = 42
7 is not a factor fo 48
7 x 7 = 49
8 x 6 = 48
12 x 4 = 48
16 x 3 = 48
24 x 2 = 48
FMECA is a bottom-up (Hardware) or top-down (Functional) approach to risk assessment. It is inductive, or data-driven, linking elements of a failure chain as follows: Effect of Failure, Failure Mode and Causes/ Mechanisms. These elements closely resemble the modern 5 Why technique. Thus answer: To estimate reliability of software, most software prediction models use probability density function to predict, choose one Group of answer choices Mean time between failures Consensus of the team Number of failures observed in each test interval Mean time to failurel
Answers
FMECA is a bottom-up hardware approach to risk assessment. It is an inductive, or data-driven, linking elements of a failure chain as follows: Effect of Failure, Failure Mode, and Causes/Mechanisms. To estimate the reliability of software, most software prediction models use the probability density function to predict "Mean Time To Failure."
FMECA is a systematic and structured analytical methodology used to identify potential failures in a system, equipment, process, or product, and to assess the effect and probability of those failures. FMECA stands for Failure Modes, Effects, and Criticality Analysis. FMECA is similar to FMEA (Failure Modes and Effects Analysis) in that it is used to identify failure modes and assess their risk.
However, FMECA goes beyond FMEA by analyzing the criticality of each failure mode. This makes it an effective tool for identifying the most significant failure modes and prioritizing them for corrective action. A Probability Density Function (PDF) is a function that describes the likelihood of a random variable taking on a particular value.
PDF is used in software prediction models to estimate the reliability of software by predicting "Mean Time To Failure" (MTTF). MTTF is the average time between failures of a system, equipment, process, or product.
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Points that are on the same line are collinear. Use the definition of slope to determine whether the given points are collinear.
(-2,6),(0,2),(1,0)
Answers
Using the definition of slope, the points (-2 , 6), (0 , 2), and (1 , 0) are collinear.
Three or more points are said to be collinear if they lie on a single straight line.
To determine whether the given points are collinear, use the definition of slope. The slope, m, determines the steepness of a line. It can be measured by the vertical distance from one point to another divided by the horizontal distance of the same points.
m = (y2 - y1)/(x2 - x1)
Getting the slope of each pair of points:
(-2 , 6) and (0 , 2)
m = (y2 - y1)/(x2 - x1)
m = (2 - 6)/(0 - -2)
m = -4/2
m = -2
(0 , 2), and (1 , 0)
m = (y2 - y1)/(x2 - x1)
m = (0 - 2)/(1 - 0)
m = -2/1
m = -2
(-2 , 6) and (1 , 0)
m = (y2 - y1)/(x2 - x1)
m = (0 - 6)/(1 - -2)
m = -6/3
m = -2
Since collinear points lies on the same line, the slope of any pair of points should be the same. Since the slopes of each pair of points is equal with each other, then they are collinear.
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Simple question free brainly
0 + (1/2)×(2. 219^2)*9. 81
Answers
The simplified value of the given expression 0 + (1/2)×(2. 219^2)*9. 81 is 24.143810005.
To simplify the expression, we can use the Order of Operations (PEMDAS): 1. Parentheses 2. Exponents 3. Multiplication 4. Division 5. Addition 6. Subtraction. Hence, to simplify the expression 0 + (1/2)×(2.219^2)*9.81, we need to follow the order of operations (PEMDAS).
1. The parentheses must be solved first: (2.219^2) = 4.924361
2. The exponents are solved next: there are none in this expression
3. The multiplication must be carried out next: 4.924361x9.81 = 48.30405741
4. The division is done next: (1/2)x48.30405741 = 24.143810005
5. The addition and subtraction are carried out last: 0 + 24.143810005 = 24.143810005
Therefore, the simplified expression is 24.143810005.
Note: The question is incomplete. The complete question probably is: Simplify the question 0 + (1/2)×(2. 219^2)*9. 81
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Worth 100 points so easy.
What is the vertex of the parabola?
f(x) = 2x² + 16x + 30
x=
y=
Answers
Answer:
vertex = (- 4, - 2 )
Step-by-step explanation:
given a parabola in standard form
f(x) = ax² + bx + c ( a ≠ 0 )
then the x- coordinate of the vertex is
\(x_{vertex}\) = - \(\frac{b}{2a}\)
f(x) = 2x² + 16x + 30 ← is in standard form
with a = 2 , b = 16 , then
\(x_{vertex}\) = - \(\frac{16}{2(2)}\) = - \(\frac{16}{4}\) = - 4
substitute x = - 4 into f(x) for corresponding y- coordinate
f(- 4) = 2(- 4)² + 16(- 4) + 30
= 2(16) - 64 + 30
= 32 - 34
= - 2
vertex = (- 4, - 2 ) or x = - 4 , y = - 2
which term best describes the number of solutions that will maximize the function below given the constraints listed? (assume that and .) 3x 2y a. one optimal solution c. unbounded b. alternate optimal solutions d. infeasible please select the best answer from the choices provided a b c d
Answers
Final answer:
The best term that describes the number of solutions that will maximize the function is one optimal solution (a)
What exactly do you mean by a practical solution ?
A practicable solution is one that complies with all limitations and specifications. When all of the requirements and constraints cannot be satisfied by any combination of decision variable values, a solution is deemed to be infeasible. The parabola's highest or lowest point represents the ideal value. If only the parabola expands down words, the optimal value, also known as the vertex of the parabola, would be maximal. The minimal value is one opening upwards. The vertex's "Y" coordinate is it.
An option for making a judgment or a resolution that does not adhere to one or more constraints. The corners of the entire model's graph would contain the ideal answer.
Explanation:
(Assume that \(x > 0\) and \(y > 0\).)
\(x + 2 < 5x-y < 2\)
\(F(x,y) = 2x+y\)
So , the equation becomes a optimal solution.
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This shape is made up of one half-circle attached to an equilateral triangle with side lengths 20 inches. You can use 3. 14 as an approximation for π
Answers
If the shape is made up of one half-circle attached to an equilateral triangle with side lengths 20 inches then, the perimeter of the shape is 91.4 inches.
To find the perimeter of the shape, we need to know the length of the curved boundary (the circumference of the half-circle) and the length of the straight boundary (the perimeter of the equilateral triangle).
The radius of the half-circle is half the length of the side of the equilateral triangle, which is 10 inches. Therefore, the circumference of the half-circle is:
C = πr = π(10) = 31.4 inches.
The perimeter of the equilateral triangle is 3 times the length of one side, which is 20 inches. Therefore, the perimeter of the triangle is:
P = 3s = 3(20) = 60 inches
Finally, the perimeter of the entire shape is the sum of the lengths of the curved and straight boundaries:
Perimeter = C + P = 31.4 + 60 = 91.4 inches.
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Complete Question
This shape is made up of one half-circle attached to a square with side lengths 11 inches. Find the perimeter of the shape.
You can use 3.14 as an approximation for π. help i don't know it.
Please help! 50 pts! If answer is correct I WILL mark brainliest!
Brent plays three sports: basketball, baseball, and soccer. He calculated the mean absolute deviation of the points he scored in each season.
basketball: mean absolute deviation of 4.6
baseball: mean absolute deviation of 3.5
soccer: mean absolute deviation of 1.2
In which sport were his scores the most spread out?
Responses:
A. basketball
B. baseball
C. soccer
Answers
Answer:
Step-by-step explanation:
i think its soccer
On a city map, 1/3 inch represents 2 city blocks in real life. If city Hall and the library are 4 1/3 inches apart on the map, what is the actual distance between the two?
Answers
26 city blocks
Explanation:\(\begin{gathered} \frac{1}{3}\text{inch = 2 city blocks} \\ \\ \text{the distance betw}een\text{ the city hall and Library = 4}\frac{1}{3}inches\text{ apart} \end{gathered}\)\(\begin{gathered} \text{let the actual distance betw}een\text{ the city hall and Library = y} \\ \frac{1}{3}inch\text{ = 2 city blocks} \\ 4\frac{1}{3}inch\text{ = y} \\ \text{cross multiply:} \\ y(\frac{1}{3})\text{ = 2(4}\frac{1}{3}) \end{gathered}\)\(\begin{gathered} \frac{y}{3}\text{ = 2(}\frac{13}{3}) \\ \frac{y}{3}\text{ =(}\frac{26}{3}) \\ 3(y)\text{ = 26(3)} \\ y\text{ = }\frac{26(3)}{3} \\ y\text{ = 26} \end{gathered}\)Hence, the actual distnce between the city Hall and library is 26 city blocks apart
Use the graphing calculator tool to plot the residual points. (1, 0. 86), (2, –0. 25), (3, –1. 66), (4, –2. 34), (5, –4. 1) Does the residual plot show that the line of best fit is appropriate for the data? Yes, the points have no pattern. Yes, the points are evenly distributed about the x-axis. No, the points are in a linear pattern. No, the points are in a curved pattern.
Answers
The line of best fit is not appropriate for the data.
Option C represents the correct expression of the graph.
Residual PlotA graph that shows the residuals on the vertical axis and the independent variable on the horizontal axis is called a residual plot.
The given residual points are (1, 0. 86), (2, –0. 25), (3, –1. 66), (4, –2. 34), (5, –4. 1). The attachment shows the graph representing these residual points.
The points on the graph follow a linear pattern. Thus it is clear that the line of best fit is not appropriate for the data.
Hence we can conclude that the line of best fit is not appropriate for the data. Also, option C represents the correct expression of the graph.
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(-2)(9x-3)-12x help!
Answers
Answer:
(-2)(9x-3)-12x
= -18x + 6 - 12x
= 6 - 30x
Please help me with my math
Answers
Hello! I know it's late but i want to help you!
Step-by-step explanation:
Simplify the expression.
Exact Form:
29
12
Decimal Form:
2.41
¯
6
Mixed Number Form:
2
5
12
So, I'll chose A.
Mark me brainest please. Hope I helped! Hope you make an 100%
-Anna
Luca decides to play Wheel of Letters. To play the game, contestants spin a wheel with 26 equal sections, lettered A through Z. If the pointer lands on any letter in the phrase "County Fair," the contestant wins a prize. What is the probability that Luca will win Wheel of Letters? Your answer must be simplified
Answers
Answer:
10/26, simpified to 5/18
Step-by-step explanation:
10 letters in "County Fair" None repeat.
26 letters in the alphabet
10/26
5/18
I will give
Brainliest
Answers
Answer:
yx=yz+ax
Step-by-step explanation:
Ben’s dog trip is on a leash that is 6 feet long. What is the approximate circular area of chips play area is 3.14 for pi
Answers
Answer:37.68
Step-by-step explanation:
first we know the radius is 6 and to find the circumference of a circle you do 2πr and we can plug 3.14 into π and 6 for the radius to it would be 2*3.14*6=12*3.14=37.68
Write 34/38 in lowest terms
Answers
The lowest term of 34/38 is 17/19.
What is a fraction?A fraction is written in the form of a numerator and a denominator where the denominator is greater that the numerator.
Example: 1/2, 1/3 is a fraction.
We have,
34/38
= 17/19
Thus,
17/19 is the lowest term.
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2. Seven less than one-fourth of a number is -1.
3. The aunti
Answers
2. I’m not sure what you mean
What is the surface area of this rectangular prism, in square meters? 3 m 7 m 13 m
Answers
Answer:
302
Step-by-step explanation:
7*13*2 + 3*7*2 + 3*13*2 = 302
PLEASE HELP!!
4) (2.03)
What is the equation of the line in
slope-intercept form?
What is the equation of the line in
function notation?
Answers
Answer:
y = (1/2)x - 2
Step-by-step explanation:
(0,-2)
(4,0)
2/4 x - 2
Can anyone help with this?
Answers
What are the four conditions necessary for X to have a Binomial Distribution? Mark all that apply.
a. There are n set trials.
b. The trials must be independent.
c. Continue sampling until you get a success.
d. There can only be two outcomes, a success and a failure
e. You must have at least 10 successes and 10 failures
f. The population must be at least 10x larger than the sample. T
g. he probability of success, p, is constant from trial to trial
Answers
Options a, b, d, and g are the correct conditions for a Binomial Distribution.
The four conditions necessary for X to have a Binomial Distribution are:
a. There are n set trials: In a binomial distribution, the number of trials, denoted as "n," must be predetermined and fixed. Each trial is independent and represents a discrete event.
b. The trials must be independent: The outcomes of each trial must be independent of each other. This means that the outcome of one trial does not influence or affect the outcome of any other trial. The independence assumption ensures that the probability of success remains constant across all trials.
d. There can only be two outcomes, a success and a failure: In a binomial distribution, each trial can have only two possible outcomes. These outcomes are typically labeled as "success" and "failure," although they can represent any two mutually exclusive events. The probability of success is denoted as "p," and the probability of failure is denoted as "q," where q = 1 - p.
g. The probability of success, p, is constant from trial to trial: In a binomial distribution, the probability of success (p) remains constant throughout all trials. This means that the likelihood of the desired outcome occurring remains the same for each trial. The constant probability ensures consistency in the distribution.
The remaining options, c, e, and f, are not conditions necessary for a binomial distribution. Option c, "Continue sampling until you get a success," suggests a different type of distribution where the number of trials is not predetermined. Options e and f, "You must have at least 10 successes and 10 failures" and "The population must be at least 10x larger than the sample," are not specific conditions for a binomial distribution. The number of successes or failures and the size of the population relative to the sample size are not inherent requirements for a binomial distribution.
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HELP HELP-
1) -2/5 x 3/7 + 7/5 x 3/7
(the / here is used for representing fraction)
Answers
Answer:
0.42857142857
Step-by-step explanation:
HELP ASAP!!!!!!! BRAINLIEST
5 attached
Answers
Answer:
I answered it on the second time you asked this question check it out
Question 2 ab5 a7b2 is equivalent to: a a1017 10 a21 a4 a 63
Answers
ANSWER:
\(\frac{b^3}{a^4}\)STEP-BY-STEP EXPLANATION:
We have the following expression:
\(\frac{a^3b^5}{a^7b^2}\)When it is a quotient, and it is the same base, the exponents are subtracted, therefore
\(\frac{a^3b^5}{a^7b^2}=a^{3-7}b^{5-2}=a^{-4}b^3=\frac{b^3}{a^4}\)