Mathematics, 21.03.2021 14:00 hfleysher

A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a variance of 6724 6724
with a mean life of 645
645
minutes.

If the claim is true, in a sample of 152
152
batteries, what is the probability that the mean battery life would be greater than 636.4
636.4
minutes? Round your answer to four decimal places.

Answers: 2

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