Two methods for reducing shoulder pain after laparoscopic surgery were compared by Jorgensen et al. (1995). The data were Group 1: 1,2,1,1,1,1,1,1,1,1,2,4,1,1 Group 2: 3,3,4,3,1,2,3,1,1,5,4.

Compare these groups using the Wilcoxon-Mann-Whitney test using α = .05.