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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 B bounce upward to be 55.1 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 95 and to 95, th 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 samp 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 95 and to.95· - to.95 = to.95

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 B bounce upward to be 55.1 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 95 and to 95, th 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 samp 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 95 and to.95· - to.95 = to.95

MATLAB: An Introduction with Applications
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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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 55.1 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 95 and to 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 56.7 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 95 and to,95· - to.95 = to.95 = (Round to three decimal places as needed.)
Transcribed Image Text: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 55.1 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If the t-value falls between - to 95 and to 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 56.7 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 95 and to,95· - to.95 = to.95 = (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. A. The tennis balls are not acceptable because the t-value falls outside - to 90 and to 90- B. The tennis balls are acceptable because the t-value falls between - to 90 and to 90- C. The sample is not large enough to determine if the tennis balls are acceptable.
Transcribed Image Text:Find the t-value, t-value = Is the company making acceptable tennis balls? Choose the correct answer below. A. The tennis balls are not acceptable because the t-value falls outside - to 90 and to 90- B. The tennis balls are acceptable because the t-value falls between - to 90 and to 90- C. The sample is not large enough to determine if the tennis balls are acceptable.
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