Repeat Exercise 7.69 but replace the \(t\) test with the large sample \(Z\) test.

Data From  Exercise 7.69 

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7.69 Refer to the labor time data in Exercise 7.3. Using the 90% confidence interval, based on the t distribution, for the mean labor time N Mean 52 1.86462 StDev 1.24992 SE Mean 0.17333 90% CI (1.57423, 2.15500) (a) decide whether or not to reject Ho: = 1.6 in favor of H 1.6 at a = 0.10; 2.2 at a = 0.10. (b) decide whether or not to reject Ho = 2.2 in favor of H: (c) What is your decision in part (a) if = 0.05? Explain.