Two investments X and Y give these returns:  E(X) = 0.6 E(Y) = 0.5 V(X) = 1   V(Y) = 2 the correlation between X and Y is p(X,Y) = 0.5 Find the expectation and variance for the combined investments:  U = X + Y, W = 2Y and then find the the correlation between U and W

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Two investments X and Y give these returns: 
E(X) = 0.6 E(Y) = 0.5
V(X) = 1   V(Y) = 2

the correlation between X and Y is p(X,Y) = 0.5

Find the expectation and variance for the combined investments: 
U = X + Y, W = 2Y

and then find the the correlation between U and W 

 

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