For a random variable X, if E(X) = 5 and V(X) = 6, then `E(X^2)` is equal toA. 19B. 31C. 61D. 11

For a random variable X, if E(X) = 5 and V(X) = 6, then `E(X^2)` is eq

1.	For a random variable X, if E(X) = 5 and V(X) = 6, then `E(X^2)` is equal toA. 19B. 31C. 61D. 11
Answer» Correct Answer - B We know that ,`V(X)=E(X^2)-[E(X)]^2` `therefore" "6=E(X^2)-(5)^2` `rArr" "E(X^2)=25+6=31`

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For a random variable X, if E(X) = 5 and V(X) = 6, then `E(X^2)` is equal toA. 19B. 31C. 61D. 11

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