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I-aM-Lost

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that it is exact...

## Homework Statement

that it is exact...

X and Y are discrete random variables with joint pmf

Chart attached

(a) Find V ar(X) and Var(Y).

(b) Find Cov(X; Y).

(c) Find the correlation of X and Y.

(d) Find the conditional distribution of X given that Y= 3

## Homework Equations

Trying to check my answers to see if i am correct.

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## The Attempt at a Solution

a. Var(x) = 0.8 Var(Y) = 1

b. 0.4

c. 0.1414

d. 1/5;1/5;3/5

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