Determine the appropriate critical value(s) for each of the following tests concerning the population proportion: a. Upper-tailed

Question:

Determine the appropriate critical value(s) for each of the following tests concerning the population proportion:
a. Upper-tailed test: α = 0.025, n = 48
b. Lower-tailed test: α = 0.05, n = 30
c. Two-tailed test: α = 0.02, n = 129
d. Two-tailed test: α = 0.10, n = 36