Independent random samples of size n1 n2 100 were selected from each of two populations. The mean and standard deviations for the two samples were x 1 125.2, x2 123.7, s1 5.6, and s2 6.8. a. Construct...

Independent random samples of size n1 n2 100 were selected from each of two populations. The mean and standard deviations for the two samples were x 1 125.2, x2 123.7, s1 5.6, and s2 6.8. a. Construct a 99% confidence interval for estimating the difference in the two population means. b. Does the confidence interval in part a provide sufficient evidence to conclude that there is a difference in the two population means? Explain.


Nov 19, 2021
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