The general format for a confidence interval can be written as: sample estimate $\pm$ multiplier * standard error. In creating a confidence interval for a proportion, the standard error is:
A) $\sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}$
B) 2 × $\sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}$
C) $\sqrt{\frac{1}{n}}$
D) $\sqrt{\frac{{p}(1 - p)}{n}}$

Question

Quizplus · Accepted Answer

The standard error for a proportion is calculated as $\sqrt{\frac{\hat{p}(1 - \hat{p})}{n}}$, where $\hat{p}$ is the sample proportion and $n$ is the sample size. This formula is used to estimate the variability of the proportion in the population from the sample.

The General Format for a Confidence Interval Can Be Written ±\pm±

The General Format for a Confidence Interval Can Be Written $\pm$