In testing the equality of two population variances, when the populations are normally distributed, the 5% level of significance has been used. To determine the rejection region, you will refer to the F table corresponding to an upper-tail area of 0.025.

Question

Quizplus · Accepted Answer

When testing the equality of two population variances using the F-test, an upper-tail area is used as the rejection region. This is because the F-distribution is always right-skewed. A 5% level of significance usually corresponds to an upper-tail area of 0.025, so referring to the F table for this critical value is appropriate.

In Testing the Equality of Two Population Variances, When the Populations