Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
A. Ho:m = 63 and Ha:m # 63, alpha = 0.10
B. Ho:m <= 88 and Ha:m > 88, alpha = 0.01
C. Ho:m >= 24 and Ha:m < 24, alpha = 0.05