Ниже приведено распределение дискретной случайной величины \(\displaystyle X\small.\)

Распределение \(\displaystyle X\)

Значение \(\displaystyle X\)	\(\displaystyle -9\)	\(\displaystyle -5\)	\(\displaystyle -2\)	\(\displaystyle -1\)	\(\displaystyle 0\)	\(\displaystyle 1\)	\(\displaystyle 2\)	\(\displaystyle 5\)	\(\displaystyle 9\)
\(\displaystyle P(X=x)\)	\(\displaystyle 0{,}15\)	\(\displaystyle 0{,}07\)	\(\displaystyle 0{,}05\)	\(\displaystyle 0{,}08\)	\(\displaystyle 0{,}3\)	\(\displaystyle 0{,}08\)	\(\displaystyle 0{,}05\)	\(\displaystyle 0{,}07\)	\(\displaystyle 0{,}15\)

Найдите математическое ожидание \(\displaystyle X\small.\)

\(\displaystyle E(X)=\)[ ]