2. A soft-drink machine at a steak house is regulated so that the amount of drink dispensed isapproximately normally distributed with a mean of 210 milliliters and a standard deviation of 12milliliters. The machine is checked periodically by taking a sample of 9 drinks and computing theaverage content. If x falls in the interval 204

Answered: Image /qna-images/answer/db58b00f-0a5a-4afd-b9df-f63c47cc7cd3.jpg

Answered: 2. A soft-drink machine at a steak…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In a sample of 14 randomly selected high school seniors, the mean score on a standardized test was 1184 and the standard deviation was 162.8. Further research suggests that the population mean score on this test for high school seniors is 1014. Does the t-value for the original sample fall between - to 99 and to 99? Assume that the population of test scores for high school seniors is normally distributed. The t-value of t = fall between to.99 and to.99 because to.99 %3D (Round to two decimal places as needed.)
For each of 12 organizations, the cost of operations per client was found, the 12 scores have a mean of $2133 and a standard deviation of $345. At a=0.01 test the claim of a stockholder who complains that the mean for all such organization exceeds $1,800 per client. what is the critical value and what t=
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A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height the balls bounce upward to be 54.8 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between −t0.95 and t0.95, then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 balls is randomly selected and tested. The mean bounce height of the sample is 56.3 inches and the standard deviation is 0.25 inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis balls?
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A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height the balls bounce upward to be 54.7 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 99 and to 99, then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 balls is randomly selected and tested. The mean bounce height of the sample is 56.7 inches and the standard deviation is 0.25 inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis balls? Find -to 99 and to.99- - to.99 = to.99 = (Round to three decimal places as needed.) Find the t-value. t-value = Is the company making acceptable tennis balls? Choose the correct answer below. O A. The tennis balls are not acceptable because the t-value falls outside -tn og and to oa.
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The intelligence quotient (1.Q) of a large number of students is normally distributed with mean 100 and standard deviation 10. Suppose that students having an 1.Q of 119.6 or higher are considered "gifted". Let Y be the number of "gifted" students out of a random sample of 4 independent students, and F be the percent of failing courses in a program, where: F=1-y2 Compute the coefficient of variation of Y (in %) Important: Use 8 or 9 decimals in all your intermediate computations. (Enter your answer in % using two decimal places. For "540.72 %", you would write 540.72). Do not round.
A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height the bails bounce upward to be 55.4 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 90 and to so. then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 balls is randomly selected and tested. The mean bounce height of the sample is 56.2 inches and the standard deviation is 0.25 inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis balls? Find - to so and to so -o s0 to so O (Round to three decimal places as needed.)

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