8. In another study of the effect of violent, sexually explicit material on aggression the same researchers use a within subject design rather than independent groups, They test the aggressiveness of 9 volunteers expose them to a violent, sexually explicit film and then they retest their aggressiveness, Thedata are shown here, Did viewing the film increase aggressiveness ? Subject + Pretest Posttest 4 4 5 L 5 LI WN 9 11 6 10 4 7 2 7 9 5 5 Notice exercise 7 has identical scores to this one compare the t valves and conclusions you would draw in each case ? Exercise 76 nature film explicit film 5 9 S 10 -J 5