Question: Given two random variables: , Y. They have the following distribution: ( = 1) = 0.4, ( = 0) = 0.2, ( = 1) =

Given two random variables: , Y. They have the following distribution:

( = 1) = 0.4, ( = 0) = 0.2, ( = 1) = 0.3, ( = 2) = 0.1;

( = 1) = 0.4, ( = 2) = 0.2, ( = 3) = 0.4.

1(6). Find (), (), (), ().

2(4). Assume the correlation between , Y is 0.13, find (5 ), (2 + 4).

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