Example 2.18 a Perform the following hypothesis tests of the population mean. In each case, draw a picture to illustrate the rejection regions on both the Z and X distributions, and calculate the p-value of the test. H:ll = 50, H: > 50, n = 100, 1 = 55, O = 10, Q = 0.05 H: 4 = 25, H,: 4