A social skills training program was implemented with seven mildly challenged students in a study to determine whether the program caused improvements in pre/post measures and behavior ratings. For one such test, the pre- and posttest scores for the seven students are
given in the table:

a. Use a nonparametric test to determine whether there is a significant positive relationship between the pre- and posttest scores.
b. Do these results agree with the results of the parametric test in Exercise 12.54?

Student Pretest Posttest 113 Ear Ned Jasper Charlie Tom Susie Lori 101 89 112 105 90 91 89 89 121 104 94