题目

概率论题库 #8934提高

选择题提高一维随机变量

题目

#8934

设

{X}_{1},{X}_{2},{X}_{3}

都服从正态分布，且

{X}_{1} \sim N\left({0,1}\right),{X}_{2} \sim N\left({0,{2}^{2}}\right),{X}_{3} \sim N\left({5,{3}^{2}}\right),{p}_{i} = P\{ - 2 \leq \; \left. {{X}_{i} \leq 2}\right\} \left({\mathrm{i} = 1,2,3}\right)

,则

\underline{\qquad}

.

A.

{p}_{3} > {p}_{1} > {p}_{2}

B.

{p}_{1} > {p}_{3} > {p}_{2}

C.

{p}_{1} > {p}_{2} > {p}_{3}

D.

{p}_{2} > {p}_{1} > {p}_{3}

解析

需要时展开查看解析。