Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college​ campuses, you believe the proportion will be near 20​%. What sample size is needed if you wish to be 95​% confident that your estimate is within 0.02 of the true​ proportion?what's the sample size needed?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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Suppose you want to estimate the proportion of traditional college students on your campus who own their own car. From research on other college​ campuses, you believe the proportion will be near 20​%. What sample size is needed if you wish to be 95​% confident that your estimate is within 0.02 of the true​ proportion?
what's the sample size needed?

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