Confidence Intervals

Select the correct parameter and use the spaces below to compute the margin of error for a confidence interval.

Proportion

\(\hat{p}\): \(n\): Confidence level:

Margin of error:

\[E = z_{\alpha/2} \cdot \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}\]

= {{properr}}

\(\bar{x}\): \(s\): \(n\): Confidence level:

Margin of error:

\[E= t_{\alpha/2} \cdot \frac{s}{\sqrt{n}}\]

= {{meanerr}}