Question
If $E[X]=1$ and $\operatorname{Var}(X)=5,$ find(a) $E\left[(2+X)^{2}\right]$(b) $\operatorname{Var}(4+3 X)$
Step 1
\[ (2+X)^2 = 4 + 4X + X^2 \] Show more…
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