Question: Assume that the differences are normally distributed. (a) Determine di = Xi - Yi for each pair of data. (b) Compute d and sd. (c)

Assume that the differences are normally distributed.

(a) Determine di = Xi - Yi for each pair of data.

(b) Compute d and sd.

(c) Test if µd ‰  0 at the α = 0.01 level of significance.

(d) Compute a 99% confidence interval about the population mean difference µd.

Observation 1 34 5 6 78 19.4 18.3 22.1 20.7 19.2 11.8 20.1 18.6 Yi 19.8 16.8 21.1 22.0 21.5 18.7 15.0 23.9

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