16. Starting Salaries, again As a group, students majoring in the engineering disciplines have the highest salary expectations, followed by those studying the computer science fields, according to a Michigan State University study.8 To compare the starting salaries of college graduates majoring in electrical engineering and computer science, random samples of 50 recent college graduates in each major were selected and the following information was obtained:

a. Do the data provide sufficient evidence to indicate a difference in average starting salaries for college graduates who majored in electrical engineering and computer science? Test using a 5.05.

b. Calculate a 95% confidence interval for the difference in the two population means. Does this confirm your conclusion in part a? Explain.

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Major Electrical Engineering Computer Science Mean ($) SD 62,428 12,500 57,762 13,330