Let Be a Discrete Random Variable with Probability Mass Function

Short Answer

Let be a discrete random variable with probability mass function: $$\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & - 1 & 1 & 2 & 3 \\\hline \mathrm { p } ( \mathrm { x } ) & .2 & .3 & .15 & .35 \\\hline\end{array}$$ Find $E \left( X ^ { 3 } \right)$