30.设随机变量X的分布律为{}XP的分布律为( ).A.{}Y=X^2P rangleB.{}Y=X^2P rangleC.{}Y=X^2P rangleD.{}Y=X^2P rangle

30.设随机变量X的分布律为$\left\{\begin{matrix}X\\P\end{matrix}\right| \begin{matrix}-2&-1&0&1&3\\\frac{1}{5}&\frac{1}{6}&\frac{1}{5}&\frac{1}{15}&\frac{11}{30}\end{matrix} \right\rangle,$则$Y=X^{2}$的分布律为( ). A.$\left\{\begin{matrix}Y=X^{2}\\P\end{matrix}\right| \begin{matrix}0&1&4&9\\\frac{1}{5}&\frac{7}{30}&\frac{1}{5}&\frac{11}{30}\end{matrix} \right\rangle$ B.$\left\{\begin{matrix}Y=X^{2}\\P\end{matrix}\right| \begin{matrix}0&1&4&9\\\frac{1}{5}&\frac{1}{6}&\frac{1}{15}&\frac{11}{30}\end{matrix} \right\rangle$ C.$\left\{\begin{matrix}Y=X^{2}\\P\end{matrix}\right| \begin{matrix}0&1&4&9\\\frac{1}{5}&\frac{1}{15}&\frac{1}{5}&\frac{11}{30}\end{matrix} \right\rangle$ D.$\left\{\begin{matrix}Y=X^{2}\\P\end{matrix}\right| \begin{matrix}0&1&4&9\\\frac{1}{5}&\frac{1}{6}&\frac{1}{5}&\frac{11}{30}\end{matrix} \right\rangle$