For each of the following situations, find the criticalvalue(s) for z or t.

a) H0: p=0.2 vs. HA: p0.2 at alpha=0.05

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

c) H0: =40 vs. HA: 40 at =0.01; n=25

d) H0: p=0.2 vs. HA: p>0.2 at =0.05; n=345

e) H0: =80 vs. HA: <80 at =0.01; n=1000

a) The critical value(s) is(are) z* =

b) The critical value(s) is(are) z* =

c) The critical value(s) is(are) t*=

d) The critical value(s) is(are) z* =

e) The critical value(s) is(are) t* =