Determine the critical region and critical values for z that would be used to test the null hypothesis at the

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)H_(o:μ≥36) and H_(a:μ<36) ,  = 0.05
(B)H_(o:μ=80) and H_(a:μ≠80) ,  = 0.10
(C)H_(o:μ≤20) and H_(a:μ>20) ,  = 0.01

A) Critical value of z = - 1,645
Critical region is right to z = - 1.645 = 0.9500
B) Critical value of z = 1.645
Critical region is between z = - 1.645 and z = + 1.645
C) Critical value of z = + 2.33
Critical region is left to z = + 2.33