Five Years Ago,the Average Starting Salary of a New University

Multiple Choice

Five years ago,the average starting salary of a new university graduate with a major in marketing was $34,000.A random sample of 10 graduates from this year's graduating class of a local university yielded the following starting salaries in thousands of dollars: 38,36,25,37,35,24,38,45,39,36.The local university wants to determine if the starting salaries have increased in the last five years.Assume that the population of starting salaries in marketing is not normally distributed.Which one of the following tests is appropriate for this problem?

A) Wilcoxon signed rank test
B) Wilcoxon rank sum test
C) Sign test
D) Kruskall-Wallis test
E) Mann-Whitney test