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A random variable X is defined by X={{...

A random variable X is defined by
`X={{:("3 with probability"=1/3),("4 with probability"=1/4),("12 with probability"=5/(12)"):}`
Then, E(X) is

A

(a) 6

B

(b) 7

C

(c) 5

D

(d) 8

Text Solution

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The correct Answer is:
B
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