5.12 Howard et al. (1986) reported a study designed to investigate whether computer anxiety changes between the beginning and end of a course on introduction to computers. The 14 student subjects were given a test to measure computer anxiety at the beginning of the term and then at the end of the 5 week summer course. High scores on this test indicate a high level of anxiety. For the data below, determine whether computer anxiety was reduced over the term.

Student Before After Student Before After A 20 20 H 34 19 B 21 18 I 28 13 C 23 10 J 20 21 D 26 16 K 29 12 E 32 11 L 22 15 F 27 20 M 30 14 G 38 20 N 25 17