概率论提高一维随机变量选择题查看解析已掌握收入错题本题讨论不看本题#10876设 X1,X2,X3{X}_{1},{X}_{2},{X}_{3}X1,X2,X3 是随机变量,且 X1∼N(0,1),X2∼N(0,22),X3∼N(5,32),pi=P{−2≤Xi≤2} (i=1,2,3){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\left\{ {-2 \leq {X}_{i} \leq 2}\right\} \; \left({i = 1,2,3}\right)X1∼N(0,1),X2∼N(0,22),X3∼N(5,32),pi=P{−2≤Xi≤2}(i=1,2,3),则‾\underline{\qquad}.A. p1>p2>p3{p}_{1} > {p}_{2} > {p}_{3}p1>p2>p3B. p2>p1>p3{p}_{2} > {p}_{1} > {p}_{3}p2>p1>p3C. p3>p1>p2{p}_{3} > {p}_{1} > {p}_{2}p3>p1>p2D. p1>p3>p2{p}_{1} > {p}_{3} > {p}_{2}p1>p3>p2
