Question: Problem 8.32 Refer to the data set of Problem 7.37. (a) By constructing a suitable two sided 95% confidence interval, test the hypothesis that there

Problem 8.32 Refer to the data set of Problem 7.37.

(a) By constructing a suitable two sided 95% confidence interval, test the hypothesis that there is no difference between the mean skein strengths of the two types of yarn.

(b) What is the P-value of your test?

(c) Use the Wilcoxon rank sum statistic to test H0 : µ1 = µ2 against H1 : µ1

= µ2. Use α = 0.05. What is the P-value of the test?

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