Mathematics, 21.04.2020 03:56 sandrahg3
A national grocer's magazine reports the typical shopper spends 7 minutes in line waiting to check out. a sample of 17 shoppers at the local farmer jack's showed a mean of 6.4 minutes with a standard deviation of 4.3 minutes. is the waiting time at the local farmer jack's less than that reported in the national magazine? use the 0.050 significance level.
a. what is the decision rule? (
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