In each of Exercises, we have provided the sample standard deviations and sample sizes for independent simple random samples from two populations. In each case, use the two-standarddeviations F-test...

In each of Exercises, we have provided the sample standard deviations and sample sizes for independent simple random samples from two populations. In each case, use the two-standarddeviations F-test and the two-standard-deviations  F-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.

s1 = 12.04, n1 = 25, s2 = 11.25, n2 = 21

a. right-tailed test, a = 0.10
b. 80% confidence interval