SOLUTION: A researcher is interested in conducting a poll on the President�s approval rating. A margin of error of at most 2% is desired. How many people must be sampled to meet this require

SOLUTION: A researcher is interested in conducting a poll on the President�s approval rating. A margin of error of at most 2% is desired. How many people must be sampled to meet this require

Algebra.Com

Question 931647: A researcher is interested in conducting a poll on the President�s approval rating. A margin of error of at most 2% is desired. How many people must be sampled to meet this requirement at the 95% confidence level if no preliminary estimate of p-hat is known?

Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
n = .50*.50(1.96/.02)^2 = 2401
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