The numbers of raisins in each of 14 miniboxes (15g) were counted for a generic brand and for Sunmaid brand raisins

Generic Brand:

25 26 25 28

26 28 28 27

26 27 24 25

26 26

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Sunmaid:

25 29 24 24

28 24 28 22

25 28 30 27

28 24

a. Are you willing to assume that the underlying population variances are equal? Why?

b. Use the critical value approach and p-value approach to determine whether there is a significant difference in the mean numbers of raisins per mini box. Use = 0.05. What are the implications of your conclusion?

c. Determine a 95% confidence interval estimate for (1 2). Does your interval estimate substantiate your conclusion in part a? Explain.