# 26. State hypotheses,Calculate test statistic. SHOW YOUR WORK. INCLUDE FORMULA.

**Question description**

A restaurant claims that the standard deviation in the length of serving times is less than 2.9 minutes. A disgruntled customer believes that the standard deviation is more than 2.9 minutes. He takes a random sample of 23 serving times, which has a standard deviation of 3.5 minutes. At α = 0.10, is there enough evidence to support the customer’s claim? Assume the population is normally distributed.

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