A Recent Gallup Poll Interviewed a Random Sample of 1523

question 24

Multiple Choice

A recent Gallup Poll interviewed a random sample of 1523 adults. Of these, 868 bought a lottery ticket in the past year.
Suppose that in fact (unknown to Gallup) exactly 60% of all adults bought a lottery ticket in the past year. If Gallup took many simple random samples of 1523 people, the sample proportion who bought a ticket would vary from sample to sample. The sampling distribution would be close to normal with

• A) mean 0.6 and standard deviation 0.00016.
• B) mean 0.6 and standard deviation 0.0126.
• C) mean 0.6 and standard deviation 0.4899.
• D) mean 0.6 and standard deviation 0.0251.

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