Amachine that fills cereal boxes is supposed to be calibrated so that the mean fill weight is 12 oz. let μ denote the true mean fill weight. assume that in a test of the hypotheses h0 : μ = 12 versus h1 : μ ≠ 12, the p-value is 0.31. a. shouldh0 be rejected on the basis of this test? explain. b. can you conclude that the machine is calibrated to provide a mean fill weight of .12 oz? explain.