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A sample of 1354 is taken out of a population of 2500 in order to obtain the percentage of people who excercise daily in comparison to the number of people who exercise once in a while. It turns out that 872 had a daily workout. Find a 95% confidence interval for the percentage of people who exercise daily among all 2500 people in the population. 32 +/- 2*.75% 64 +/- 2*1.3% 48 +/- 2*1.6% 64 +/- 2*1.0% 27 +/- 2*2.1%

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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