- $\begin{array}{c|c}\text { Sample } & \bar{x} \\\hline 4,5,8 & 5.7 \\4,5,9 & 6 \\4,8,9 & 7 \\5,8,9 & 7.3\end{array}$

Multiple Choice

$$\text { Use the given table to determine the mean, } \mu _ { \bar { x } ^ { \prime } } \text { of the variable } \bar { x } \text { for the given sample size. }$$
- $\begin{array}{c|c}\text { Sample } & \bar{x} \\\hline 4,5,8 & 5.7 \\4,5,9 & 6 \\4,8,9 & 7 \\5,8,9 & 7.3\end{array}$

A) 7
B) $6.5$
C) $8.7$
D) 6