Question

If Var(x)=4 ,E(x)= 3,then var(2x+2)

Answer 1

Answer:

{eq}\begin{align*} &Var(2X+1) = 4 \\ \implies &4Var(X) = 4 \\ \implies &Var(X) = 1 \end{align*} {/eq}

Therefore,

{eq}Var(1-3X)...