Question: Suppose you want to determine whether the average values for populations 1 and 2 are different, and you randomly gather the following data. (a) Test

Suppose you want to determine whether the average values for populations 1 and 2 are different, and you randomly gather the following data.

Sample 1 Sample 2 12 9. 10 8. 10 11 1 10

(a) Test your conjecture, using a probability of 0.01 of committing a Type I error. Assume that the population variances are the same and x is normally distributed in both populations.

(b) Use these data to construct a 98% confidence interval for the difference between the two population means.

Sample 1 Sample 2 12 9. 10 8. 10 11 1 10 8. 11 10 3 10 10 10 11 11 Co CO CO LO 2. LO 2.

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