A tool company claims that the mean number of defective screws they produce per box is 72. The mean number of defective screws in 100 randomly chosen boxes was found to be 76, with a standard deviation of 19. Test this hypothesis.
A tool company claims that the mean number of defective screws they produce per box is 72. The mean number of defective screws in 100 randomly chosen boxes was found to be 76, with a standard deviation of 19. Test this hypothesis.
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Transcribed Image Text:A tool company claims that the mean number of defective screws they produce per
box is 72. The mean number of defective screws in 100 randomly chosen boxes was
found to be 76, with a standard deviation of 19. Test this hypothesis.
Fail to reject the null hypothesis. There is enough evidence to oppose the tool company's
claim.
O Reject the null hypothesis. There is not enough evidence to oppose the tool company's claim.
O Reject the null hypothesis. There is enough evidence to oppose the tool company's claim.
Fail to reject the null hypothesis. There is not enough evidence to oppose the tool company's
claim.
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