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The mean and standard deviation of a ran...

The mean and standard deviation of a random variable X are given by E(X) = 5 and `sigma_(x)=3` respectively, then
`(1) E(X^(2))=…….`
(2) `E[(3X-2)^(2)]= ……….`
(3) `V(3-2X)= …………`

A

(1) 34, (2) 250, (3) 36

B

(1) 34, (2) 370, (3) 81

C

(1) 34, (2) 370, (3) 36

D

(1) 34, (2) 250, (3) 81

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The correct Answer is:
A
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