8. A computer company claims that the lifespan of its batteries is 2.7 years. The population standard deviation is 0.85 years. A sample of 25 batteries was tested, and their mean lifespan was 3.1 years. Using a 95% confidence level, determine if the company's claim is correct. Fail to reject the null hypothesis. There is enough evidence to oppose the company's claim. Reject the null hypothesis. There is enough evidence to oppose the company's claim. O Reject the null hypothesis. There is not enough evidence to oppose the company's claim. O Fail to reject the null hypothesis. There is not enough evidence to oppose the company's claim.
8. A computer company claims that the lifespan of its batteries is 2.7 years. The population standard deviation is 0.85 years. A sample of 25 batteries was tested, and their mean lifespan was 3.1 years. Using a 95% confidence level, determine if the company's claim is correct. Fail to reject the null hypothesis. There is enough evidence to oppose the company's claim. Reject the null hypothesis. There is enough evidence to oppose the company's claim. O Reject the null hypothesis. There is not enough evidence to oppose the company's claim. O Fail to reject the null hypothesis. There is not enough evidence to oppose the company's claim.
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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Transcribed Image Text:8. A computer company claims that the lifespan of its batteries is 2.7
years. The population standard deviation is 0.85 years. A sample
of 25 batteries was tested, and their mean lifespan was 3.1 years.
Using a 95% confidence level, determine if the company's claim is
correct.
O Fail to reject the null hypothesis. There is enough evidence to
oppose the company's claim.
O Reject the null hypothesis. There is enough evidence to oppose
the company's claim.
Reject the null hypothesis. There is not enough evidence to
oppose the company's claim.
Fail to reject the null hypothesis. There is not enough evidence
to oppose the company's claim.
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