Recall the hypothesis test done in Question 1: A battery company claims that its
ID: 3358672 • Letter: R
Question
Recall the hypothesis test done in Question 1:
A battery company claims that its batteries last an average of 100 hours under normal use. After several complaints that the batteries do not last this long, an independent testing laboratory decided to test the company’s claim with a random sample of 42 batteries. The data from the 42 batteries appeared to be unimodal and symmetric with a mean 97 hours and a standard deviation of 12 hours. Is this evidence that the company’s claim is false and these batteries actually last less than 100 hours?
What would be a Type I Error in the context of this problem?
The battery company's claim is actually false, but the testing lab believes these batteries last less than 100 hours on average.Explanation / Answer
Tpype I error: Reject the H0 when H0 is true
The battery company's claim is actually true, but the testing lab believes these batteries last less than 100 hours on average.
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