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How large of a sample size would you need to estimate a population proportion if you wanted to construct a 95% confidence interval
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How large of a sample size would you need to estimate a population proportion if you wanted to construct a 95% confidence interval

User Wellbin Huang
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Answer:

Step-by-step explanation:

To find a 95% CI with a margin of error no more than ±3.5 percentage points, where the true population proportion is around 42%, you must survey at least 764 people. 10×764 = 7640; presumably the electorate is larger than that.

User Vahe Galstyan
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