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Trying to find n, but can't figure out what p or q are.

 
 
Reply Sat 22 Mar, 2014 03:35 pm
A researcher wishes to estimate the proportion of households that have broadband Internet access. What size sample should be obtained if she wishes the estimate to be within .03 with 99% confidence if she uses a 2009 estimate of 0.635 obtained from the National Telecommunications and Information Administration?

If I don't have a percentage at least, then how do I find out what p and q are from just this information?
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