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[主观题]
设二维随机变量(x,y)的概率密度为f(x,y),则P{x>1}=()A.B.C.D.
设二维随机变量(x,y)的概率密度为f(x,y),则P{x>1}=()
A.
B.
C.
D.
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设二维随机变量(x,y)的概率密度为f(x,y),则P{x>1}=()
A.
B.
C.
D.
A.正确
B.错误
A.0.1
B.1
C.0.25
D.2
A.P(X=Y)=0.5
B.P(X=Y)=0
C.P(X=Y)=0.75
D.P(X=Y)=1
设随机变量(X,Y)的分布列为
则P|Y<x|为0.6。()
A.正确
B.错误
A.0.1
B.0.16
C.0.25
D.0.75