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MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If the standard deviation of the random variable $X$ is $\sqrt{3 p q}$ and mean is $3 p$ then $E\left(x^2\right)=\ldots \ldots$

A
$3 p q+3 q^2$
B
$3 p(1+2 p)$
C
$3 p q+3 p^2$
D
$3 q(1+2 q)$
MHT CET Subjects
EXAM MAP