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A researcher wishes to estimate the proportion of adults who have​ high-speed Internet access. What size...

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 0.02 with 90​% confidence if ​(a) she uses a previous estimate of 0.34? ​(b) she does not use any prior​ estimates? ​(a) n equals ____? ​(Round up to the nearest​ integer.)

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