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: (6pts)

a. H₀: m £ 51 and H_a: m > 51, a = 0.10

b. H₀: m ³ 28 and H_a: m < 28, a = 0.01

c. H₀: m = 93 and H_a: m ¹ 93, a = 0.05