In testing for the equality of two population variances, when the populations are normally distributed, the 10% level of significance has been used. To determine the rejection region, it will be necessary to refer to the F table corresponding to an upper-tail area of:
A) 0.90
B) 0.05
C) 0.20
D) 0.10
E) 0.85

Question

Quizplus · Accepted Answer

For testing the equality of two population variances, we use the F-test. The F-test has two degrees of freedom: one for the numerator and one for the denominator. To determine the rejection region, we need to refer to the F table corresponding to the level of significance and degrees of freedom. In this case, we have a 10% level of significance, which means we have a 5% significance level in each tail (since it's a two-tailed test). Therefore, we need to refer to the F table for an upper-tail area of 0.05, which corresponds to answer B.

In Testing for the Equality of Two Population Variances, When