X Has the Following Probability Distribution P(X) $\begin{array} { l l l l l } \mathrm { X } & 1 & 2 & 3 & 4 \\\mathrm { P } ( \mathrm { X } ) & .1 & .5 & .2 & .2\end{array}$

Multiple Choice

X has the following probability distribution P(X) : $\begin{array} { l l l l l } \mathrm { X } & 1 & 2 & 3 & 4 \\\mathrm { P } ( \mathrm { X } ) & .1 & .5 & .2 & .2\end{array}$
Compute the expected value of X.

A) 2.5
B) 1.0
C) 1.6
D) 0.6