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

Data From  Exercise 7.69 

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.