Home
Class 12
MATHS
If the mean and variance of a binomial d...

If the mean and variance of a binomial distribution are 18 and 12 respectively,then n=…………

A

36

B

54

C

18

D

27

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Applications of Derivatives

    CHETANA PUBLICATION|Exercise Exercise|144 Videos
  • Definite integration

    CHETANA PUBLICATION|Exercise Exercise|111 Videos

Similar Questions

Explore conceptually related problems

The mean and the variance of a binomial distribution are 4 and 2 respectively.Then the probability of 2 success is

The mean and variance of a binomial distribution are 4 and 3 respectively. Then the probability of getting exacatly six successes in this distribution, is

CHETANA PUBLICATION-BINOMIAL DISTRIBUTION-EXERCISE
  1. If X~B(4,p) and P(X=0)=16/81,then P(X=4)=…………..

    Text Solution

    |

  2. The probability of a shooter hitting a target is 3/4.How many minimum ...

    Text Solution

    |

  3. If the mean and variance of a binomial distribution are 18 and 12 resp...

    Text Solution

    |

  4. A coin is tossed six times.The probability of obtaining 5 or 6 heads i...

    Text Solution

    |

  5. For a binomial distribution,n=5.If P(X=4)=P(X=3) then p=…….

    Text Solution

    |

  6. A coin is tossed four times,then the expected value of the number of h...

    Text Solution

    |

  7. 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 ...

    Text Solution

    |

  8. A fair coin is tossed 9 times.The probability that it shows exactly 5 ...

    Text Solution

    |

  9. The probability of guessing correctly at least six of 10 answers in Tr...

    Text Solution

    |

  10. X is a binomial variate with E(X)=4 and standard deviation =sqrt 3,the...

    Text Solution

    |

  11. If a fair die is rolled 5 times,what is the probability that two of th...

    Text Solution

    |

  12. X~B(n,P) if n=6 and P[x=4]=P[x=2] then P=

    Text Solution

    |

  13. A fair coin tossed 8 times.The probability that it shows heads a large...

    Text Solution

    |

  14. If mean of a binomial distribution is 3 and variance is 3/2 the proba...

    Text Solution

    |

  15. If X~B(n,P) and E(X)=12,Var(X)=4,then n=?

    Text Solution

    |

  16. A die is thrown three times.The probability of obtaining at most two s...

    Text Solution

    |

  17. In a binomial distribution,n=4.If 2P(X=3)=3P(X=2)then p=……….

    Text Solution

    |

  18. Given that X~B(n=10,P) and E(X)=8,find the value of P.

    Text Solution

    |

  19. The probability that the certain kind of component will survive a chec...

    Text Solution

    |

  20. Let the p.m.f or r.v.x be P(X)=(4/x)(5/x)^x(4/9)^(4-x),x=0,1,2,3,4.Fin...

    Text Solution

    |