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If p.m.f of a r.v.X is P(X)=P(A)=(4/x)(5...

If p.m.f of a r.v.X is `P(X)=P(A)=(4/x)(5/9)^x.(4/9)^(4-x)`,x=0,1,2,3,4 then E(X)=………….

A

`22.4`

B

`22.2`

C

`2.24`

D

`2.22`

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CHETANA PUBLICATION-BINOMIAL DISTRIBUTION-EXERCISE
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  14. Given that X~B(n=10,P) and E(X)=8,find the value of P.

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