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A researcher wishes to estimate the proportion of adults who havehigh-speed Internet access. What size sample should be obtained if she wishes the estimate to

A researcher wishes to estimate the proportion of adults who havehigh-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.03

0.03 with 99

99% confidence if

(a) she uses a previous estimate of 0.52

0.52?

(b) she does not use any priorestimates?

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