question archive A national grocer magazine reports the typical shopper spends 5 minutes in the line waiting to check out
A national grocer magazine reports the typical shopper spends 5 minutes in the line waiting to check out
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A national grocer magazine reports the typical shopper spends 5 minutes in the line waiting to check out. A sampleof 15 shoppers at the local Farmer Jacks showed a mean of 4.2 minutes with a standard deviation of 3.8 minutes. Is the waiting time at the local Farmer Jack's less than that reported in the national magazine? Use the 0.010 significance level. What is the decision rule? The value of the test statistic? WHat is the decsion reguarding H0?
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