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?

Question
Asked Dec 5, 2018

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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Step 1

Given Data: Proportion 

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Step 2

At 95% confidence 

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Step 3

Data are normally ...

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