Hi everyone,
we just leanred the cov, and I'm trying to apply the formula
cov(X,Y)=E(XY)-E(X)E(Y) to the following question
f(x,y)=(0.6)^x(0.4)^1-x(0.3)^y(0.52)^1-y(2)^xy where poss. values for X and
Y are x=0,1 and y=0,1.
The prof. never gave us any examples for cov and neither does the text book.
Now I don't know what values to plug in for X and what values to plug in for
Y.
Could someone PLEASE explain to me how am I supposed to know what vales to
plug into the equation???
TNX
Maja
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