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posted by  Diva54metoyer on 11/3/2009 3:24:37 PM  |  status: Closed  |  Earned Karma: 25

Sample size determination

Course Textbook Chapter Problem Needs by
Statistics and Probability Essentials of Biostatistics ISBN 13-978-0-7637-5477-8 Chapter 8 #6 11/5/2009 at 12:00:00 PM
Question Details:
An investigator wants to design a study to estimate the difference in the proportions of men and women who develop early onset cardiovascular disease(defined as cardiovasculare disease before age 50) A study conducted 10 years ago found that 15% and 8% of men and women respectively developed early onset cardiovascular disease. How many men and women are needed to generate a 95% CI estimate for the difference inproportions with a margin of error not exceeding 4%> ( Is the formula for this problem Margin of error?)
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posted by GEORGE86 on 11/4/2009 11:32:35 AM  |  status: Live
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I hope this will help you
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