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Let the p.m.f. of a random variable X be...

Let the p.m.f. of a random variable X be -
` P(x) = (3 -x)/10 " for " x = - 1, 0, 1, 2`
= 0 otherwise
Then E(X) is ………… .

A

0

B

1

C

2

D

3

Text Solution

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The correct Answer is:
A
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