can you show me the steps and if it can be done in a calculator

For each of the following situations, find the critical value(s) for zort a) He: p=0.5 vs. Ha p*0.5 at a = 0,05 b) Ho: p=0.4 vs. Ha:p>0.4 at a=0.05 c) Hop=20 vs. Hy #20 at =0.05, n=32 d) Ho p=0.5 vs. Ha p>0.5 ata=0.01: n=340 e) Ho: - 30 vs. Hy