Provide an Appropriate Response $$\begin{array} { l | c c c c } \mathrm { x } & 3 & 6 & 7 & 12 \\\hline \mathrm { P } ( \mathrm { x } ) & 0.03 & 0.2 & 0.32 & 0.45\end{array}$$

Multiple Choice

Provide an appropriate response.
-Calculate the mean for the discrete probability distribution shown here. $$\begin{array} { l | c c c c } \mathrm { x } & 3 & 6 & 7 & 12 \\\hline \mathrm { P } ( \mathrm { x } ) & 0.03 & 0.2 & 0.32 & 0.45\end{array}$$

A) 8.93
B) 7
C) 28
D) 2.2325