Two methods of memorizing difficult material are being tested to determine if one produces better retention. Nine pairs of students are included in the study. The students in each pair are matched according to LQ and academic background and then are assigned to the two methods at random. A memorization test is given to all the students and the following scores are obtained: Method A Method B 1 90 85 2 86 87 3 72 70 4 65 62 Pair 5 44 44 6 52 53 7 46 42 8 38 35 9 43 46 At a = 0.05, test to determine if there is a significant difference in the effectiveness of the two methods.