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A random sample of 2500 students is taken to estimate the number of smokers on campus among the 15,000 enrolled students. 917 students in the sample are smokers. Find a 95% confidence interval for the percentage of non-smokers among the 15,000 enrolled students. 63% + or - 1% 37% + or - 1% 37% + or - 2% 63% + or - 2% 63%

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Carlos Rodriguez <carlos@math.albany.edu>

This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998