设随机变量X~N(3,9),且,则c=_________/ananas/latex/p/876072
举一反三
- 设X~N(μ,4),Y~N(μ,9),a=P{Xμ-2},b=P{Yμ+3},则/ananas/latex/p/1237/ananas/latex/p/990
- 设随机变量X~N(5,),则P(52)=./ananas/latex/p/6071
- 设随机变量,则P(2<X<3)等于()/ananas/latex/p/511542
- 设X和Y为随机变量,且P{X0,Y0}=,则P{min(X,Y)<0}=/ananas/latex/p/990/ananas/latex/p/990/ananas/latex/p/36622
- 设随机变量X~E(1),且,则P(Y≥2)= ./ananas/latex/p/837747