1a. Based a simple random sample of size 34 and with a sample proportion p^=0.34, we wish to test

0:=0.26H0:p=0.26 1:0.26H1:p0.26

with a significant level of 8%. Then

what is the appropriate test statistic?

(smallest critical value is -1.75 and the largest one is 1.75)

1b. Based a simple random sample of size 72 and with a sample proportion p^=0.72, we wish to test

0:=0.53H0:p=0.53 1:<0.53H1:p<0.53

with a significant level of 5%. Then what is the appropriate test statistic?

(smallest/largest critical value is -1.65)