(Answered) Question in a simple random sample of 1500 voters 55 said

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Question: In a simple random sample of 1,500 voters, 55% said they planned to vote for a particular proposition, and 45% said they planned to vote against it. The estimated margin of victory for the proposition is thus 10%. What is the standard error of this estimated margin? What is an approximate 95% confidence interval for the margin?

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