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In: Statistics and Probability

A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size...

A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within

2 percentage points with 99​% confidence if

​(a) he uses a previous estimate of 36​%?

​(b) he does not use any prior​ estimates?

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