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A microbrewery plans to conduct a study of beer consumption among men between the ages of 29 and 45.

A microbrewery plans to conduct a study of beer consumption among men between the ages of 29 and 45.

A pilot test indicated that men in this age category consume an average of 6 beers per week with a standard deviation of 2.3.

If the microbrewery seeks a 95% confidence level and a precision of .5 beers, what size sample should be used in the study?

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