31 (3) Use the fllowing paired sample data for this exercise: Population 1 40 27 55 34 Population 2 53 42 68 50 a. Compute d and 8d- b. Give a point estimate for u1 - 42 = Hd- c. Construct the 99% confidence interval for u1 - p2 = Ha from these data. d. Test, at the 10% level of significance, the hypothesis that u - u2 +-12 as an alternative to tihe ie hypothesis that 41 - 42 = -12.

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