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#1 2007-11-15 14:05:59

CCmath125
Guest

Probability (Expected Values) Homework

Hey there, I have a homework question for probability class...Here's the question:

f(x,y) = (1/210)(2x + y)   
 
   x  --> (2, 6)
   y --> (0, 5)

He wants us to find E (x), E(y), E(xy), E(x^2), E(y^2) and var(x)....where do I begin???

I know I'm supposed to set up some integral like this:

E(x) = (1/210) ∫ ∫x (2x + y) dxdy = 268/63  but then I get lost..

help please??

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