A university planner is interested in determining the percentage of spring semester students who will attend summer school.  She takes a pilot sample of 160 spring semester students discovering that 56 will return to summer school. - Using the result of the pilot study with a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 3% or less?

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A university planner is interested in determining the percentage of spring semester students who will attend summer school.  She takes a pilot sample of 160 spring semester students discovering that 56 will return to summer school.

- Using the result of the pilot study with a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 3% or less?

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Hypothesis Testing

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