You are trying to determine whether male and female Indiana University grads having equal qualifications receive different starting salaries for their first job. The file P10_67.XLS contains the starting salaries for 10 male and 10 female IU grads.

a. Assuming that each row of data represents paired observations, and using α = 0.05, can you conclude that equally qualified people of different genders have the same starting salaries on average? Be sure to write down your null and alternative hypotheses.

b. How would you collect data to ensure that the observations are actually paired?