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A battery manufacturer claims that the mean life of a particular type of their batteries is 500 days. A consumer's rights bureau thinks this claim is inflated and the actual mean battery life is significantly lower than 500.

A battery manufacturer claims that the mean life of a particular type of their batteries is 500 days. A consumer's rights bureau thinks this claim is inflated and the actual mean battery life is significantly lower than 500.

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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Question 1 10 pts A battery manufacturer claims that the mean life of a particular type of their batteries is 500 days. A consumer's rights bureau thinks this claim is inflated and the actual mean battery life is significantly lower than 50. A sample of batteries are tested. The resulting battery life sample data is recorded in batteries.csv . Run an appropriate t-test to check whether the bureau's suspicion may be statistically confirmed or not. Use a significance level of a = 0.05.
Transcribed Image Text:Question 1 10 pts A battery manufacturer claims that the mean life of a particular type of their batteries is 500 days. A consumer's rights bureau thinks this claim is inflated and the actual mean battery life is significantly lower than 50. A sample of batteries are tested. The resulting battery life sample data is recorded in batteries.csv . Run an appropriate t-test to check whether the bureau's suspicion may be statistically confirmed or not. Use a significance level of a = 0.05.
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