For each of the following situations, find the critical value(s) for z or t. State if z or t for each answer.

Round to two decimal places as needed.

a) H₀: p= 0.7 vs. H_A: p 0.7 at = 0.05

b) H₀: p= 0.3 vs. H_A: p>0.3 at = 0.01

c) H₀: = 40 vs. H_A: 40 at =0.01; n= 36

d) H₀: p=0.7 vs. H_A: p>0.7 at =0.05; n=345

e) H₀: = 50 vs. H_A: <50 at =0.01; n=1000