Question: 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. H₀: m = 25 and H_a: m ¹ 25, a = 0.10

b. H₀: m £ 32 and H_a: m > 32, a = 0.01

c. H₀: m ³ 13 and H_a: m < 13, a = 0.05