A statistics professor hypothesized that not only would the means vary, but also so would the variances if the business statistics course was taught in two different ways but had the same final exam. He teaches one section of the course using detailed PowerPoint slides and the other requires students to read the book and answer questions in class discussions. A sample of the scores was recorded and is listed below. Can we infer at the 5% level that the variances of the scores differ between the two sections?

Class 1: 64 85 80 64 48 62 75 77 50 81 90

Class 2: 73 78 66 69 79 81 74 59 83 79 84

Please Solve Manually