You Are Presented with Data from Two Independent Samples

Multiple Choice

You are presented with data from two independent samples. The variable being measured is continuous. The distribution of the population of each sample is right skewed. You wish to test the hypothesis that there is a difference in the median value of the variable for the samples. Which of the following is the better method for testing whether the medians differ?

A) Data transformation and t-confidence interval of transformed data
B) Paired t-test
C) Sign Test
D) Mann-Whitney Test