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For X ~ B (n,p) and E (X) = 12, Var (X) ...

For `X ~ B` (n,p) and E (X) = 12, Var (X) = 4, then the value of n is

A

3

B

48

C

18

D

36

Text Solution

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The correct Answer is:
C
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NIKITA PUBLICATION-BINOMIAL DISTRIBUTION-MCQS
  1. Let X ~ B (n,P). I f E(X) = 5 and Var (x) = 2.5 find n and p

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  2. For X ~ B (n,p),if E(X) = 5, Var (X) = 2.5, then p =

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  3. For X ~ B (n,p) and E (X) = 12, Var (X) = 4, then the value of n is

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  4. Given that X ~ B( n=10, p) .If E (x) = 8, find the value of p .

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  5. For X ~ B (n,p), n = 10, E (X) = 5, then p =

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  6. For X ~ B (n,p), n = 10, E (X) = 5, then Var (X) =

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  7. For X ~ B (n = 10, p = 0.2), P (X=1) =

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  8. For X ~ B (n = 10, p = 0.2), P(X ge 1) =

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  9. For X ~ B (n = 10, p = 0.2), P (X le 8) =

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  10. For X ~ B (n = 8, p = 0.5), P (|X-2| le 2) =

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  11. If r.vX ~B(n =5,P=(1)/(3)) then P(2gt X gt 4)=

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  12. Let X ~ B (n, p ), if E (X) = 5, Var (X) = 2.5, then P(X<1) is

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  13. Let the p,m f. of r.v X be d p(x)+((4) ,(x))(5/9)^x(4/9)^(4-x) , ...

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  14. Let the p,m f. of r.v X be d p(x)+((4) ,(x))(5/9)^x(4/9)^(4-x) , ...

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  15. For X ~ B (n , p), if n = 5 and the sum of the mean and variance is 1....

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  16. Each of five questions on a multiple choice examination has four choic...

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  17. Each of five questions on a multiple choice examination has four choic...

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  18. Each of the total fice questions in amultiple choice examination has f...

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  19. If X be binomial distribution with mean np and variance npq, then find...

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  20. If n toys are distributed among N boys randomly, then the probability ...

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