Using the data in Exercise 2, compute the 0.90 confidence interval on the difference between the two population means, μ1
= μ2.
Exercise 2
The results of two independent samples from two populations are listed below:
Sample 1: 17, 19, 10, 29, 27, 21, 17, 17, 14, 20
Sample 2: 26, 24, 26, 29, 15, 29, 31, 25, 18, 26
Use the 0.05 level of significance and test the hypothesis that the two populations have equal means. Assume the two samples come from populations whose standard deviations are different.