Question: a. Use the following data and = .10 to test the stated hypotheses. Assume x is normally distributed in the populations and the variances of

a. Use the following data and = .10 to test the stated hypotheses. Assume x is normally distributed in the populations and the variances of the populations are approximately equal.

H0: Âµ1 â€“ Âµ2 = 0 Ha: Âµ1 â€“ Âµ2 â‰ 0

b. Use these data to construct a 90% confidence interval toestimate.

Sample Sample2 ni = 20 = 118 s 23.9 5 n2-20 X2 = 113 21.6

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