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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 0.05 with 99​% confidence if ​(a) she uses a previous estimate of 0.48​? ​(b) she does not use any prior​ estimates?

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TOPIC: Estimating the sample size for a specific margin of error and an estimate of population proportion.

ine, E=mangin Hene, we us e, トっ aan ie estimated value population prspantion 0-48 we hnouws 257 Co, 005 2.5% X 2.576nce we nav 0.48 x 0.52 005 : 0.0 5 x2. 576 =0.05 0.48 X0.52-X(2-57 - 0 05 n 662 5159. Sine, she. doe then, we take., ynot use an 0.50 t hrin etimatesj OY So, E0.05 ん Aize O:50 x0. 50 x in05 = 0.05 . 0 50 x0. 50 x (2.576) 6635776 (.05

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