Question: The joint pdf of x1 and x2 is * (a) Find the marginal pdfs p1(x1) and p2(x2). * (b) Are x1 and x2 independent? (c)

The joint pdf of x1 and x2 isx2 = 1 x = 2 x = 3 x = 1

*

(a) Find the marginal pdfs p1(x1) and p2(x2).
*

(b) Are x1 and x2 independent?

(c) Compute E5x1 + x26.

(d) Compute cov5x1, x26.

(e) Compute var55x1 - 6x26.

x2 = 1 x = 2 x = 3 x = 1 .2 0 .2 P(x1,x2)=x = 2 0 .2 0 x = 3 .2 0 .2

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