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Cyrus John

What is the formula for a confidence interval for a proportion?

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Shyra Mae Gomez
Best Answer

The formula is: CI=p^±zp^(1−p^)n\text{CI} = \hat{p} \pm z \sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}CI=p^​±znp^​(1−p^​)​​, where p^\hat{p}p^​ is the sample proportion.

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