US News and World Report each year conducts a survey of star

U.S. News and World Report each year conducts a survey of starting salaries in various career fields. If you were to devise a plan to replicate this study, how large a sample would you need to take to be 98% certain that your estimate is within $575 of the true mean starting salary? Assume that alfa is $3,300.
(Round your answer(s) to 3 decimal places.)