A researcher wishes to estimate the proportion of households that have broadband Internet access. What size sample
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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 0.03 with 99% confidence if
(a) She uses a 2009 estimate of 0.635 obtained from the National Telecommunications and Information Administration?
(b) She does not use any prior estimates?
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