A school superintendent wants to determine what proportion of the 5000 middle and high school students in the district use cigarettes

Writing Nov 12, 2020

A school superintendent wants to determine what proportion of the 5000 middle and high school students in the district use cigarettes. He will distribute a questionnaire to a random sample of the students. How many students will he need to sample in order to have a 95 percent margin of error of ±5 percent in his estimate?