Question: If X and Y are any random variables with E ( X ) = 5, E ( Y ) = 6, E ( XY )

If X and Y are any random variables with E(X) = 5, E(Y) = 6, E(XY) = 21, V(X) = 9 and V(Y) = 10, then the relationship between X and Y is a:

a.

strong positive relationship

b.

strong negative relationship

c.

weak positive relationship

d.

weak negative relationship

Can you give me a step by step approach to answering this question?

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