Mathematics, 21.04.2021 05:00 rebelfighter24ovin5h

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 4 percentage points with 95% confidence if (a) he uses a previous estimate of 28%?
(b) he does not use any prior estimates?

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