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