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- Oct 27, 2007
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Ok im new here so I dont know where this post should actually go, direct me if im in the wrong place
I have a question of biosatistics, im sure its easy; i just started the topic and got stuck immediately lol
1- Your objective is to estimate the proportion of overweight people in town X. If the confidence required is 99% and an error of 20% on either side of the estimate is permitted..What would be the sample size of your study? A pilot study of 200 persons from the town X showed 22 persons as overweight.
First i get a (-) answer, which is wrong, then i get 291 which again is wrong..
The correct answer is 1347
I have a question of biosatistics, im sure its easy; i just started the topic and got stuck immediately lol
1- Your objective is to estimate the proportion of overweight people in town X. If the confidence required is 99% and an error of 20% on either side of the estimate is permitted..What would be the sample size of your study? A pilot study of 200 persons from the town X showed 22 persons as overweight.
First i get a (-) answer, which is wrong, then i get 291 which again is wrong..
The correct answer is 1347
