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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,

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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 15%. What sample size is needed if you wish to be 90% confident that your estimate is within 0.02 of the true proportion? A sample size of is needed. (Round up to the nearest whole number.)

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