A Clinic Has Four Doctors

Multiple Choice

A clinic has four doctors.They wish to compare the amount of time that doctors spend with their patients.It is suspected that times may not be normally distributed but are otherwise assumed similar except in center,so a nonparametric test was chosen.The Kruskal-Wallis test results are shown below. Which is the best conclusion at α = .01?

A) The doctors have the same median times.
B) The doctors have different median times.
C) The sample size is insufficient for this kind of test.
D) A one-factor ANOVA would be a better kind of test.