A Random Variable Has the Probability Distribution Table as Shown $$P ( X \leq - 1 )$$

Short Answer

A random variable has the probability distribution table as shown. Calculate $$P ( X \leq - 1 )$$ . $$\begin{array} { c | l | l | l | l | l | } \hline \boldsymbol { x } & - 3 & - 2 & - 1 & 0 & 1 \\\hline \boldsymbol { P } ( \boldsymbol { X } = x ) & & & 0.5 & 0.2 & 0.1 \\\hline\end{array}$$ ​ $$P ( x \leq - 1 ) =$$ __________