In a leg ulcer trial, time to complete ulcer healing (weeks) between intervention and control groups were measured and compared. The researcher wishes to know if there is any difference between the average time taken for complete healing for both groups. P-value computed for Kolmogorov-Smirnov test is less than α = 0.05. Which type of statistical test should the researcher use?  1. Kruskal Wallis test 2. Mann-Whitney U test 3. Independent T-test 4. One-way ANOVA

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