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The p.m.f. of a r.v. X is P(x) =1/15,...

The p.m.f. of a r.v. X is
P(x) =1/15, for x =1,2, .......... , 14,15
= 0 otherwise.
Then, E(X) is equal to

A

2

B

4

C

6

D

8

Text Solution

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The correct Answer is:
D
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