Two methods for reducing shoulder pain after laparoscopic surgery were compared by Jorgensen et al. (1995). The data were

Verify that both the Wilcoxon–Mann–Whitney test and Cliff’s method reject at the 0.05 level. Although the Kolmogorov–Smirnov test rejects with α = 0.05, why might you suspect that the Kolmogorov–Smirnov test will have relatively low power in this particular situation?

Group 1: 12111111112411 Group 2: 33431231154