随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.4,求联合概率分布表及其随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.求联合概率分布表及其边

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随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.4,求联合概率分布表及其随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.求联合概率分布表及其边
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随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.4,求联合概率分布表及其随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.求联合概率分布表及其边
随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.4,求联合概率分布表及其
随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.求联合概率分布表及其边缘分布,求EX,EY

随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.4,求联合概率分布表及其随机变量(x,y)只取下面值,0,0:-1,1:-1,2:2,0:且相应概率为0.2,0.3,0.1,0.求联合概率分布表及其边
联合概率分布表
Y 0 1 2
X
-1 0 0.3 0.1
0 0.2 0 0
2 0.4 0 0
P(x=-1)=0.4,P(X=0)=0.2,P(X=2)=0.4
P(Y=0)=0.6,P(Y=1)=0.3,P(Y=2)=0.1
EX=-1*0.4+0*0.2+2*0.4=0.4
EY=0*0.6+1*0.3+2*0.1=0.5