2 . Suppose you want to test the hypotheses below at a O . 15 significance level HO : d HI d s O You have the following information about the data Samples are dependent , and distributed normally Sample A : X - bar - 5.86 5 = 1.28 1 = 5 Sample B : X - bar = 680 8 = 0.69 1 = 5 Difference : d - bar = 0.94 s = 1.73 1 = 5 What conclusion do you make ? L a . Do not reject HI I b . Do not reject HO C. Reject HO I d Reject HI