A sample of non-English majors at a selected college was used in a study to see if the student retained more from reading a19th-century novel or by watching it in DVD form. Each student was assigned one novel to read and a different one to watch, and then they were given a 20-point written quiz on each novel. The test results are shown below. At ? = 0.05, can it be concluded that the book scores are higher than the DVD scores? Assume the variables are normally distributed.

Book 90 80 90 75 86 88 84 92 DVD 80 70 75 80 79 77 80 83