stats question

You want to support the claim that there is a difference in the standard deviation of hours spent studying per week at De Anza and Foothill College. 30 students are sampled from each college. Select the correct model from the list. O Matched pairs t-test O One sample, Chi-square test of variance O One sample, t test for mean O Pooled variance t-test O F-test comparing variances O Unequal variance t-test O One sample, Z test of proportion