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8.2: Confidence Interval for a Proportion
https://stats.libretexts.org/Workbench/Introduction_to_Statistical_Methods_(Yuba_College)/08%3A_Confidence_Intervals_for_One_Population/8.02%3A_Confidence_Interval_for_a_Proportion
The sample proportion $\hat{p}$ is the point estimate for p, the standard error (the standard deviation of the sampling distribution) of $\hat{p}$ is \(\sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\...The sample proportion $\hat{p}$ is the point estimate for p, the standard error (the standard deviation of the sampling distribution) of $\hat{p}$ is $\sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\right)}$ , the z α /2 is the critical value using the standard normal distribution, and the margin of error $\mathrm{E}=Z_{\alpha / 2} \sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\right)}$ .
6.2: Confidence Interval for a Proportion
https://stats.libretexts.org/Workbench/Statistics_for_Behavioral_Science_Majors/06%3A_Confidence_Intervals_for_One_Population/6.02%3A_Confidence_Interval_for_a_Proportion
The sample proportion $\hat{p}$ is the point estimate for p, the standard error (the standard deviation of the sampling distribution) of $\hat{p}$ is \(\sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\...The sample proportion $\hat{p}$ is the point estimate for p, the standard error (the standard deviation of the sampling distribution) of $\hat{p}$ is $\sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\right)}$ , the z α /2 is the critical value using the standard normal distribution, and the margin of error $\mathrm{E}=Z_{\alpha / 2} \sqrt{\left(\frac{\hat{p} \cdot \hat{q}}{n}\right)}$ .

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