多选题

下表是X={1,2,3}，Y={1,2,3}的概率矩阵。 ...

Question

下表是X={1,2,3}，Y={1,2,3}的概率矩阵。

以下说法不正确的是：

A. X and Y are independent

B. The covariance of X,Y is non-zero

C. The probability Y=3 conditional on X=1 is 10%

D. The unconditional probability that X=2 is 50%