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If E(X)=2, then find the value of E(-x/4)

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If E(X)= 2, then find the value of E(-x/4).

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Given E(-x/4) 

= E(-1/4. x) 

=-1/4.E(X) 

= -1/4. 2 

=-1/2 since E(aX) 

= a E(X)

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