February 22, 2017

Homework Help: Statistics

Posted by Marnetta on Tuesday, December 7, 2010 at 10:01am.

A researcher wants to estimate the mean serum cholesterol level for college age women. In a past study the stndard devition for this measure was 42 units. If the researcher wants to be off in his estimate by no more than three units ( with 99% confidence), how large must his sample be.?

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