A researcher wants to test for the equality of two population variances when the populations are normally distributed. He has opted for a10% level of significance . Which of the following upper-tail areas of the F table must he use to determine the rejection region?
A) 0.90
B) 0.20
C) 0.10
D) 0.05

Question

Quizplus · Accepted Answer

To test for the equality of two population variances with a 10% level of significance, we need to use the F distribution table with a significance level of 0.05 for the upper-tail area. This is because the F distribution is a right-skewed distribution and we are interested in the upper-tail area because we want to find the rejection region. The rejection region is the area in the upper 10% of the distribution, and we can find this area using the F distribution table with a 0.05 significance level.

A Researcher Wants to Test for the Equality of Two