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For the following probability distributi...

For the following probability distribution.

`E(X^(2))` is equal to

A

3

B

5

C

7

D

10

Text Solution

Verified by Experts

`E(X^(2))=SigmaX^(2)P(X)=1cdot1/10+4cdot1/5+9cdot3/10+16cdot2/5`
`=1/10+4/5+27/10+32/5`
`=(1+8+27+64)/(10)`=10
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