Is there a function in R that will allow me to estimate the sample
size required from count data (poisson data?), given the known
variance and desired margin of error and confidence interval?
My specific data set will be based on a survey of hikers that will be
asked about the number of animals of species 'x' they observed during
a given period. I need to know the number of hikers to interview. ie,
I would like to calculate the mean number of species 'x' +/- margin of
error with 95% confidence.
This is a simple exercise for normally distributed continuous data,
but I'm running into roadblocks for count data.
Sincerely,
Shawn Morrison
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