Below are the sample standard deviations and sample sizes for independent simple random samples from two populations. Use the two-standard-deviations F-test and the two-standard-deviations F-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.

1. What is the test statistic F?

F =

2. What is(are) the critical value(s) for F?

The critical value(s) is(are) =

3. Find a 95% confidence interval for 1 2.

= ................. 1 2. ................