If X and Y Are Any Random Variables with E(X)=

question 29

Multiple Choice

If X and Y are any random variables with E(X) = 3, E(Y) = 2, E(XY) = 12, V(X) = 16 and V(Y) = 25, then the relationship between X and Y is a: $$\text { Hint: } \operatorname { corr } ( X , Y ) = \operatorname { Cov } ( X , Y ) / ( ( \sqrt { V ( X ) } \sqrt { V ( Y ) } ) = ( E ( X Y ) - E ( X ) E ( Y ) ) / ( \sqrt { V ( X ) } \sqrt { V ( Y ) } )$$

• A)weak negative relationship.
• B)strong positive relationship.
• C)strong negative relationship.
• D)weak positive relationship.

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