A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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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 5 percentage points with 95 % confidence if ( a he uses a previous estimate of 24% ? (b ) he does not use any prior estimates ?
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