st: How to compute sample size assuming a specificy accuracy in parameter estimation

["Tiago V. Pereira" <tiago.pereira@mbe.bio.br>]

Dear all,

I would like to know if there is a Stata package out there that computes
the sample size required to give a specific accuracy in the estimation of
the population parameter (assumed to be normally distributed).

For example, I would like to estimate the mean of a population having a
precision of 2 in my 95% confidence intervals. Precision here is the plus
and minus value used to create the confidence interval.

I have guesses on the population mean, standard deviation and know the
total population size.

I have checked -aipe-, -sampsi-, and others, but failed to find out a
specific package for that purpose.

Let me know if I am missing something when using them.


All the best,

Tiago
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