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2) The data sets A and B below are dependent. Use a 95% confidence interval to test the hypothesis Ho : Hd = 0. a = 0.05 (Ch 1 1) A 19 17 36 32 B 20 17 13 14 24 11 d a) Find the mean of the differences d [2] a) d = b) Find to/ [2] b ) to/ c) Find the 95% confidence interval using S d = 7.8 [2] Lower Bound = Upper Bound = d) Would you reject Ho, according to the confidence interval? [1] Reject or Fail to reject 2