Question: A paired difference experiment produced the following results: nd = 38 1 = 92 2 = 95.5 = -3.5 s2d = 21 a. Determine

A paired difference experiment produced the following results:
nd = 38 1 = 92 2 = 95.5 = -3.5 s2d = 21
a. Determine the values of z for which the null hypothesis, µ1 - µ2 < 0, would be rejected in favor of the alternative hypothesis, µ1 - µ2 < 0. Use α = .10.
b. Conduct the paired difference test described in part a. Draw the appropriate conclusions.
c. What assumptions are necessary so that the paired difference test will be valid?
d. Find a 90% confidence interval for the mean difference
e. Which of the two inferential procedures, the confidence interval of part d or the test of hypothesis of part b, provides more information about the differences between the population means?

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