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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asked Oct 6, 2021 22.2k views

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Vahe Galstyan · Answer 1 · 2021-10-12T20:17:39+0000

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.

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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