For each of the following situations, find the critical value(s) for z or t. a) Ho: p =0.8 vs. HA: p # 0.8 at a = 0.05 b) Ho: p = 0.6 vs. HA: p > 0.6 at a = 0.01 c) Ho: H = 40 vs. HA: J # 40 at a = 0.01; n = 31 d) Ho: p= 0.8 vs. HA: p> 0.8 at a = 0.10; n = 330 e) Ho: H = 50 vs. HA: u