Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail test, z = 1.30, and a=0.02 c) two-tail test, z = 2.80, and a = 0.02 b) one-tail test, z = 2.35, and a = 0.10 d) two-tail test, z = -1.94, and a = 0.01 Click here to view page 1 of the cumulative probabilities for the standard normal distribution Click here to view page 2 of the cumulative probabilities for the standard normal distribution. a) The p-value is (Round to four decimal places as needed.)