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).90
B).20
C).10
D).05

Question

Quizplus · Accepted Answer

Since the level of significance is 10%, we need to find the critical value for a right-tailed test with alpha = 0.10. The degrees of freedom for the numerator are equal to the sample size for population 1 minus 1, and the degrees of freedom for the denominator are equal to the sample size for population 2 minus 1. We can find the critical value by looking at the F table for the appropriate degrees of freedom and upper-tail area. For alpha = 0.10, the upper-tail area is 0.10/2 = 0.05 (because it's a two-tailed test), and for the appropriate degrees of freedom, the critical value of F is found to be 2.306. Therefore the answer is D.

In Testing for the Equality of Two Population Variances,when the Populations