The annual base salaries for 200 students graduating from a reputable MBA program this year are of interest to those in the admissions office who are responsible for marketing the program to prospective students. The data are in the file P2_74.XLS. Use Excel to choose 10 simple random samples of size 15 from the given frame. For each simple random sample you obtain, compute the mean annual salary. Are these sample means equivalent? Explain why or why not.