SOLUTION: A television sports commentator wants to estimate the proportion of citizens who follow professional football. What sample size should be obtained if he wants to be within 2 percen

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Question 996051: A television sports commentator wants to estimate the proportion of citizens who follow professional football. What sample size should be obtained if he wants to be within 2 percentage points with 94% confidence if he uses an estimate of 54% obtained from a poll? Round to nearest integer.
Answer by stanbon(75887) About Me  (Show Source):
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A television sports commentator wants to estimate the proportion of citizens who follow professional football. What sample size should be obtained if he wants to be within 2 percentage points with 94% confidence if he uses an estimate of 54% obtained from a poll? Round to nearest integer.
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Since E = z*sqrt[p*q/n]
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n = [z/E]^2*pq
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n = [1.8808/0.02]^2*0.54*0.46 = 2197 when rounded up
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Cheers,
Stan H.
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