Question

A manufacturer of car batteries claims that the life of the company’s batteries in years is approximately normally distributed with a population variance of 0.81. If a random sample of 10 of these batteries has a variance of 1.44

- which set of hypotheses is most appropriate to test the claim that the population variance is more than 0.81?

- Which test statistic is appropriate?

- Calculate the value of the test statistic.

Answer #1

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