SOLUTION: In a recent poll, 340 people were asked if they liked dogs, and 27% said they did. Find the Margin of Error for this poll, at the 95% confidence level. Answer to 4 decimal places

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Question 1182765: In a recent poll, 340 people were asked if they liked dogs, and 27% said they did.
Find the Margin of Error for this poll, at the 95% confidence level.
Answer to 4 decimal places if possible.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
half-interval or margin of error is z(0.975)*sqrt(p*(1-p)/n)
=1.96*sqrt(0.27*0.73/340)
=1.96*0.0241=0.0472