State the null and alternative hypotheses, find the P-value, find the critical value, should we reject Ho, or should we fail to reject Ho at the 5% level of significance (why or why not?) in the following situations:
a. The test statistic of Z = 1.00 is obtained when testing the claim that p > 0.3.
b. The test statistic of Z = -2.50 is obtained when testing the claim that P < 0.75.
c. The test statistic of Z = -1.94 is obtained when testing the claim that p = 0.375.