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.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 56.9 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. - ¹0.95 = -2.064 t-value = ... ¹0.95 = 2.064 (Round to three decimal places as needed.) Find the t-value. Ex
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.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 56.9 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. - ¹0.95 = -2.064 t-value = ... ¹0.95 = 2.064 (Round to three decimal places as needed.) Find the t-value. Ex
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![K
"
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.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 56.9 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 t0.95
- ¹0.95 - 2.064
¹0.95 = 2.064
(Round to three decimal places as needed.)
Find the t-value.
t-value =
=
Ex](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F35b6c70d-8de6-4ced-ba13-39b6b43ecdee%2F956e44dc-c5e9-49ec-986e-2c0a3bafc169%2Fadcqnmj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:K
"
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.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 56.9 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 t0.95
- ¹0.95 - 2.064
¹0.95 = 2.064
(Round to three decimal places as needed.)
Find the t-value.
t-value =
=
Ex
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