What size sample should be obtained if she wishes the estimate to be within?, statistics assignment help

  

A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.01 with 90​% confidence if​(a) she uses a previous estimate of 0.58?(b) she does not use any prior estimates?(a) n = ____ (Round up to the nearest integer.)(b)

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