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April 16, 2014

Homework Help: Statistics

Posted by Mary on Friday, May 18, 2012 at 5:00pm.

A Gallup Poll reported the percentage of Americans who approve of the President's job performance was 47% with a margin of error of 2 percentage points. What is a 95% confidence interval for the population percentage?

A. 41% to 53%
B. 45% to 49%
C. 46% to 48%
D. 43% to 51%

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