Question: A professional organization is attempting to determine whether salaries of hospital CFOs differ by geographic region. Five hospital CFOs were randomly selected from each of the following four regions of the United States: East, Midwest, South, and West. Each CFO was then asked his or her annual salary. The distributions of salaries were highly skewed. Given the data below, test whether the population medians are equal at the .05 significance level.

Median n Avg Rank Region

59.00 5 17.20 East

55.30 5 10.40 Midwest

54.10 5 9.10 South

53.20 5 5.30 West