A random sample of 200 observations produced a sample proportion equal to .60. Find the critical and

Question:

A random sample of 200 observations produced a sample proportion equal to .60. Find the critical and observed values of z for each of the following tests of hypotheses using α = .01.
a. H0: p = .63 versus H1: p < .63
b. H0: p = .63 versus H1: p ≠ .63