Asked by Diane
Mail security estimates that the average daily per-store theft is less than $250, but wants to determine accuracy of this statistic. The company researcher takes a sample of 81 clerks and finds that X =$260 and s=$20.
a) Test at a=.05
b) Construct a 95% CIE of u
a) Test at a=.05
b) Construct a 95% CIE of u
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