Mathematics, 01.02.2021 22:50, kamerin46

A national grocer’s magazine reports the typical shopper spends 11 minutes in line waiting to check out. A sample of 21 shoppers at the local Farmer Jack’s showed a mean of 10.0 minutes with a standard deviation of 2.2 minutes. A. Is the waiting time at the local Farmer Jack’s less than that reported in the national magazine? Use the 0.050 significance level.
B. What is the decision rule? Reject H0: µ ≥ 11 and fail to reject H1: µ < 11 when the test statistic is less than what?
C. What is your decision regarding H0?

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A national grocer’s magazine reports the typical shopper spends 11 minutes in line waiting to check...