In the formula $\bar { x } \pm z _ { \alpha / 2 } \sigma / \sqrt { n }$ , the $\alpha / 2$ refers to: $\begin{array}{|l|l|}
\hline A&\text {the probability that the confidence interval will contain the populati on mean. }\
\hline B&\text { the probability that the confidence interval will not contain the population mean. }\
\hline C&\text {the area in the lower tail or upper tail of the sampling distribution of the sample mean. }\
\hline D&\text { the level of confidence.}\
\hline
\end{array}$

Question

In the formula $\bar { x } \pm z _ { \alpha / 2 } \sigma / \sqrt { n }$ , the $\alpha / 2$ refers to: $\begin{array}{|l|l|}
\hline  A&\text {the probability that the confidence interval will contain the populati on mean. }\
\hline  B&\text { the probability that the confidence interval will not contain the population mean. }\
\hline  C&\text {the area in the lower tail or upper tail of the sampling distribution of the sample mean.  }\
\hline  D&\text { the level of confidence.}\
\hline 
\end{array}$

Quizplus · Accepted Answer

The Answer of In the formula $\bar { x } \pm z _ { \alpha / 2 } \sigma / \sqrt { n }$ , the $\alpha / 2$ refers to: $\begin{array}{|l|l|}
\hline  A&\text {the probability that the confidence interval will contain the populati on mean. }\
\hline  B&\text { the probability that the confidence interval will not contain the population mean. }\
\hline  C&\text {the area in the lower tail or upper tail of the sampling distribution of the sample mean.  }\
\hline  D&\text { the level of confidence.}\
\hline 
\end{array}$

In the Formula xˉ±zα/2σ/n\bar { x } \pm z _ { \alpha / 2 } \sigma / \sqrt { n }xˉ±zα/2​σ/n​

In the Formula $\bar { x } \pm z _ { \alpha / 2 } \sigma / \sqrt { n }$