Chapter 10.2, Problem 14E

a.

To determine

Fill the missing values.

Check whether it is a one-sided test or two-sided test.

b.

To determine

Explain the conclusion when $\alpha =0.05$ and $\alpha =0.01$.

c.

To determine

Explain whether the assumption that the two population variances are equal is reasonable or not.

d.

To determine

Explain the conclusion when $\alpha =0.05$.