2,500 college freshmen were randomly selected for a national survey. Among survey participants, the mean grade-point average (GPA) was 2.7 , and the margin of error was 4% for the 99% confidence interval. We want to get a 90% confidence interval with a small margin of error 6%. How many students do we need to select? Remember that our answer is about actual people -- to answer this question you must round your number up to the nearest whole number (if you need 100.1 people, you really need 101 people)