The MS Excel printout shows a test for the difference in two population means....

The MS Excel printout shows a test for the difference in two population means.

a. Do the two sample variances indicate that the assumption of a common population variance is reasonable?

b. What is the observed value of the test statistic? If this is a two-tailed test, what is the p-value associated with the test?

c. What is the pooled estimate s2 of the population variance?

d. Use the answers to part b to draw conclusions about the difference in the two population means.

e. Use the information in the printout to construct a 95% confidence interval for the difference in the population means. Does this interval confirm your conclusions in part d?