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The p.m.f. of a r.v. X is P(x)={{:(kx^(2...

The p.m.f. of a r.v. X is `P(x)={{:(kx^(2)","x=1","2","3","4),(0", otherwise"):}`, then E (X) =

A

(a) `7/3`

B

(b) `5/3`

C

(c) `10/3`

D

(d) `8/3`

Text Solution

Verified by Experts

The correct Answer is:
C
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