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CBSE XII
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Math
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Probability
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Q)
Two probability distributions of the discrete random variable X and Y are given below.
X 0 1 2 3 P(X)
1
5
2
5
1
5
1
5
Y 0 1 2 3 P(Y)
1
5
3
10
2
5
1
10
Prove that
E
(
Y
2
)
=
2
E
(
X
)
.
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