Re: how to calculate stand. err. if sample =50% of population

[Paul R Swank]

the estimate of the standard error for a sample from a finite population is
[{sigma/sqrt(n)}{sqrt[(N-n)/(N-1)]}].

At 12:39 PM 11/30/00 GMT, [EMAIL PROTECTED] wrote:
>Hello,
>
>who knows an answer to the following question?
>Let's assume that I take a sample of e.g. 100 people. I ask them a
>question and, e.g. 50% say "yes". I construct a 90%-confidence interval
>and get a standard error of 11.6. Fine.
>
>However, this assumes that the population size is unlimited.
>If the population was 100, then I would not have any standard error.
>However, what if the population size is 200? How do I construct a
>confidence interval then?
>
>Anybody with an idea?
>
>Thanks in advance
>
>Nils Riemenschneider
>
>
>
>Sent via Deja.com http://www.deja.com/
>Before you buy.
>
>
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------------------------------------
Paul R. Swank, PhD.
Professor & Advanced Quantitative Methodologist
UT-Houston School of Nursing
Center for Nursing Research
Phone (713)500-2031
Fax (713) 500-2033

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