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Suppose that  X and Y  have the following joint probability density function. f (x, y)  = ...

Suppose that  X and Y  have the following joint probability density function.

f (x, y)  = 
3
332
 y,    0  <  x  <  5,  y  >  0,  x − 4  <  y  <  x + 4
(a) Find E(XY).
(b) Find the covariance between X and Y.
Math   Statistics-And-Probability   
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