Determine Whether the Following Is a Probability Distribution $$\begin{array} { c | c } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 1 & 0.037 \\2 & 0.200 \\3 & 0.444 \\4 & 0.296\end{array}$$

Essay

Determine whether the following is a probability distribution. If not, identify the requirement that is not satisfied.
- $$\begin{array} { c | c } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 1 & 0.037 \\2 & 0.200 \\3 & 0.444 \\4 & 0.296\end{array}$$