1: Data Table Group 1 (support Group 2 (weaken favored position) opposing position) Sample size 31 31 Mean 28.6 25.5 Standard 12.9 11.9 deviation (1 ) (2) OoOO 0 0 0 0 II A # V VH IIA19. In a study of the cognitive skills required for successful arguments, 62 psychology graduate students were equally divided into two groups. Group 1 was presented with arguments that always attempted to strengthen the favored position. Group 2 was presented with arguments that always attempted to weaken the nonfavored position. If you compare the mean ratings for the two groups with a small-sample t-test, assuming equal variances, determine the validity of this assumption at