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A recent Gallup Poll interviewed a random sample of 1,523 adults. Of these, 868 bought a lottery ticket in the past year.

A 95% confidence interval for the proportion of all adults who bought a lottery ticket in the past year is (assume Gallup used an SRS)

A) 0.57 ± 0.00016.

B) 0.57 ± 0.00032.

C) 0.57 ± 0.013.

D) 0.57 ± 0.025.

E) 0.57 ± 0.03.

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Statistics and Probability, Statistics

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