cheritay89 cheritay89

24-11-2022
Mathematics

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

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

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