For each of the next three parts: Calculate the value of the test statistic(Z calculated). Set up the rejection region and show the critical value(s) Interpret the result a) H=100 H:>100 a=0.05 n=121 =25 x=106 b) Ho:=50 Ha : < 50 a=0.01 n=10 =7x=48 c)Ho:=1000 Ha:1000 a=0.10n=100 =106x=1005