Consider using a z-test to test H0: p = 0.9. Determine the P-value in each of the following situations. (Round your answers to four decimal places.)
(a) Ha: p > 0.9, z = 1.47
(b) Ha: p < 0.9, z = -2.77
(c) Ha: p ≠0.9, z = -2.77
(d) Ha: p < 0.9, z = 0.28