Compute the Mean of the Random Variable with the Given $\begin{array} { c l } \hline x & P ( x ) \\\hline 0 & 0.2 \\10 & 0.2 \\25 & 0.4 \\30 & 0.2 \\\hline\end{array}$

Multiple Choice

Compute the mean of the random variable with the given discrete probability distribution.
$\begin{array} { c l } \hline x & P ( x ) \\\hline 0 & 0.2 \\10 & 0.2 \\25 & 0.4 \\30 & 0.2 \\\hline\end{array}$

A) 16.25
B) 11.2
C) 126.0
D) 18