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

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

A

`(1)/(2)`

B

`(219)/(256)`

C

`(37)/(256)`

D

`(7)/(64)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise EXERCISE - II|76 Videos

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|34 Videos

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|25 Videos

  • QUADRATIC EQUATIONS & EXPRESSIONS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|88 Videos

  • RANDOM VARIABLES

    AAKASH SERIES|Exercise Exercise 4.4|9 Videos

Similar Questions

Explore conceptually related problems

If the mean and variance of a binomial distribution are 4 and 2 respectively , then the probability of 2 successes of that binomial variate X , is

If the mean and variance of a binomial distribution are 4 and 4//3 . Then the distribution is

The mean and variance of a binomial distribution are 4 and 3 respectively. Fix the distribution and find P(X ge 1) .

If the mean and variance of a binomial variate X are 8 and 4 respectively then P(X lt 3)=

If the mean and variance of a binomial variable X are 2 and 1 respectively, then P(X ge1)=

The mean and variance of a random variable X having binomial distribution are 4 and 2 respectively. Then P(x gt 6)=

If the mean and variance of a binomial distribution are 15//4 and 15//16 then the number of trials is

The median and mean of a distribution of 29 and 32 respectively then mode

AAKASH SERIES-RANDOM VARIABLE -EXERCISE - I
  1. If the mean of a binomial distribution with 9 trials is 6, then its va...

    Text Solution

    |

  2. For binomial distribution n=10, q=0.4, then mean is

    Text Solution

    |

  3. Six coins are tossed simultaneously . The probability of getting at le...

    Text Solution

    |

  4. If a binomial distribution have parameters 9, 1//3 then P(X=4)=

    Text Solution

    |

  5. If the mean and variance of a binomial distribution are 15//4 and 15//...

    Text Solution

    |

  6. Let X be a binomially distributed variate with mean 10 and variance 5....

    Text Solution

    |

  7. The mean and standard deviation of a binomial variate X are 4 and sqrt...

    Text Solution

    |

  8. The mean and the variance of a binomial distribution are 4 and 2 respe...

    Text Solution

    |

  9. X is a binomial variate with parameters n=6 and p. If 4P(X=4)=P(X=2), ...

    Text Solution

    |

  10. The probability that a student is not swimmer is 1//4. Then the probab...

    Text Solution

    |

  11. From a pack of 52 cards, 3 cards are drawn successively with replaceme...

    Text Solution

    |

  12. A pair of dice is rolled 4 times. The probability of getting doublet e...

    Text Solution

    |

  13. Out of 10,000 families with 4 children each , the probability number o...

    Text Solution

    |

  14. If X is a Poisson variate such that P(X=0)=P(X=1), then the parameter ...

    Text Solution

    |

  15. In a Poisson distribution if P(X=0)=P(X=1)=k, the value of k is

    Text Solution

    |

  16. If X is a poisson distribution such that P(X=1)=P(X=2)then,P(X=4)=

    Text Solution

    |

  17. If X is a Poisson variate and P(X=1)=2P(X=2) them P(X=3)=

    Text Solution

    |

  18. A random variable X has poisson distribution with mean 2. Then P(xlt1....

    Text Solution

    |

  19. If 3% of electric bulbs manufactured by a company are defective , then...

    Text Solution

    |

  20. In a Poission X, If P(X=0)=0.2 then the variance of the distribution i...

    Text Solution

    |