Independent simple random samples from two strains of mice used in an experiment yielded the following measurements on plasma glucose levels following a traumatic experience:

Strain A: 54; 99; 105; 46; 70; 87; 55; 58; 139; 91 Strain B: 93; 91; 93; 150; 80; 104; 128; 83; 88; 95; 94; 97 Do these data provide sufficient evidence to indicate that the variance is larger in the population of strain A mice than in the population of strain B mice? Let a ¼ :05. What assumptions are necessary?