Explain Why the Following Is or Is Not a Valid $$\begin{array} { | c | c | c | c | c | c | } \hline x & 0 & 2 & 4 & 6 & 8 \\\hline p ( x ) & - .1 & .1 & .2 & .3 & .5 \\\hline\end{array}$$

Essay

Explain why the following is or is not a valid probability distribution for the discrete
random variable x. $$\begin{array} { | c | c | c | c | c | c | } \hline x & 0 & 2 & 4 & 6 & 8 \\\hline p ( x ) & - .1 & .1 & .2 & .3 & .5 \\\hline\end{array}$$