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Let X1and X2be any two random variables,then V(X1+X2) must be A.greater than:V( X1)+V(X2). B.equal toV( X1)+V(X2). C.less thanV(X1)+V( X2 ). D.none of the above.

Let X1and X2be any two random variables,then V(X1+X2) must be

A.greater than:V( X1)+V(X2).

B.equal toV( X1)+V(X2).

C.less thanV(X1)+V( X2 ).

D.none of the above.

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