Question
Suppose you want to determine whether the average values for populations 1 and 2 are different,...
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
2, 11, 7, 8, 2, 5, 9, 1, 9, 1, 5, 8, 11, 2, 5, 5, 6, 9
sample 2
10, 12, 8, 12, 9, 12, 9, 7, 9, 10, 11, 10, 11, 10, 7, 8, 10, 10
Test your conjecture, using a probability of committing a Type I error of .01. Assume the population
variances are the same and the x is normally distributed in the populations.
b. Use these data to construct a 98% confidence interval for the difference in the two population means.
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