question archive A researcher wishes to estimate the percentage of adults who support abolishing the penny
A researcher wishes to estimate the percentage of adults who support abolishing the penny
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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 3 percentage points with 99?% confidence if
?(a) he uses a previous estimate of 34?%?
?(b) he does not use any prior? estimates?
?(a) n=
?(b) n=
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