8. The null and alternate hypotheses are: H0H1=H2 H13l117l12 A random sample of 15 observations from the first population revealed a sample mean of 350 and a sample standard deviation of 12. A random sample of 17 observations from the second population revealed a sample mean of 342 and a sample standard deviation of 15. At the .10 significance level, is there a difference in the population means? Note: Use the sixstep hypothesistesting procedure for the following exercises