A national grocers magazine reports the typical shopper spends eight minutes in line waiting to check out.

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A national grocer’s magazine reports the typical shopper spends eight minutes in line waiting to check out. A sample of 24 shoppers at the local No Frills showed a mean of 7.5 minutes, with a standard deviation of 3.2 minutes. Is the waiting time at the local No Frills less than that reported in the national magazine? Use the 0.05 significance level.

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