Asked by Mary
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%
A. 41% to 53%
B. 45% to 49%
C. 46% to 48%
D. 43% to 51%
Answers
Answered by
MathGuru
Calculate .47 ± .02 for your interval. Convert to a percent to make your selection.
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