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
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 90% confidence if
(a) he uses a previous estimate of 22%?
(b) he does not use any priorestimates?
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Authors: Joseph Lehner
1st Edition
0486799921, 9780486799926
