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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

6

B

7

C

5

D

8

Text Solution

Verified by Experts

The correct Answer is:
B
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