4. You are interested in implementing an inexpensive workshop run by volunteers to reduce bullying in school and decide to test the effectiveness of this workshop on a smaller number of schools. You select 9 schools with the highest incidences of bullying in your district and record how many reports of bullying there were in the past month. You then implement the training program at all nine schools and record how many reports there are in the month following the end of the program. The data are shown below. A. What do you conclude? Before after 33 33 D D2 23 23 1 1 26 20 22 25 -1 1 21 1 1 27 26 -1 1 28 27 -1 1 33 30 -3 9 38 38 36 -2 4 26 26 0 0 28 25 -3 9 248 239 -9 15 27 Variance 29.0278 18.7778 2.250 12.75