At 10:22 AM 1/22/2003, Stan Brown wrote:
Eric Lund <[EMAIL PROTECTED]> wrote in sci.stat.edu:> We really do not want to score all 1600 if we don't have to. [snip] >So, what I would like to >know is, can we get an approximation for the population mean without >having any baseline data, and if so, how many students would need to >be sampled?
i had sent a post about a short handout i did re: margin of error ... that can be found at
http://roberts.ed.psu.edu/users/droberts/papers/marer2.pdf
you might find this helpful
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