You are interested in how participating in group tutoring impacts performance on a criminological theory exam. You hypothesize that there will be a difference between students' scores before they participated in tutoring and their scores after tutoring. (16 points total) Mean N Std. Deviation Std. Error Mean Pair 1 Exam Before 75.6111 18 14.41461 3.39756 Exam After 80.3889 18 12.33426 2.90721 Paired Differences t df Sig. (2-tailed) Mean Std. Deviation Std. Error Mean 99% Confidence Interval of the Difference Lower Upper Pair 1 ExamBefore - ExamAfter -4.7778 2.08035 0.49035 -10.04609 .49054 -9.744 17 .018 Based only on the SPSS output, decided whether to reject the null hypothesis. Be sure to explain your decision