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

May 3rd, 2015
Price: $5 USD

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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