$\bar{x}-z_{\alpha / 2} \cdot \frac{\sigma}{\sqrt{n}}<\mu<\bar{x}+z_{\alpha / 2} \cdot \frac{\sigma}{\sqrt{n}}$ Is an Example Of

Multiple Choice

$\bar{x}-z_{\alpha / 2} \cdot \frac{\sigma}{\sqrt{n}}<\mu<\bar{x}+z_{\alpha / 2} \cdot \frac{\sigma}{\sqrt{n}}$ is an example of $\mathrm{a}(\mathrm{n})$

A) confidence interval.
B) interval estimate.
C) distribution interval.
D) confidence limit.