A national grocer's magazine reports the typical shopper spends 8 minutes In line waiting to check out. A sample of 24 shoppers at the local Farmer Jack's showed a mean of 7.5 minutes with a standard deviation of 3.2 minutes. Is the walting time at the local Farmer Jack's less than that reported In the national magazine? Use the 0.05 significance level. a. What Is the decision rule? (Negative amount should be Indicated by a minus sign. Round your answer to 3 decimal places.) Reject Ho: H 2 8 when the test statistic is less than b. Compute the value of the test statistic. (Negative amount should be Indicated by a minus sign. Round your answer to 2 decimal places.) Value of the test statistic -7.66 c. What Is your decision regarding He? O Reject He Do not reject He