Home
Class 12
MATHS
If the mean of a binomial distribution w...

If the mean of a binomial distribution with 9 trials is 6, then its variance is

A

2

B

3

C

4

D

`sqrt(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|34 Videos

  • RANDOM VARIABLE

    AAKASH SERIES|Exercise EXERCISE - I|33 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 of the binomial distribution is 25, then the standerd deviation lies in the interval

A : If the difference between the mean and variance of a binomial distribution for 5 trials is 5//9 then the distribution o is (2//3+1//3)^(5) R : The binomial distribution with parameters n, p is (q+p)^(n)

If the differnce between the mean and variance of a buinomial distribution for 5 trials is 5//9 , then the distribution is

If the mean of the binomial distribution is 100. Then standard deviation lies in the interval

If a binomial distribution has mean 20 and variance is 15, then p=

If a binomial distribution has mean 15 and variance is 10, then n=

If for a binomial distribution, the mean is 10 and the variance is 5, then find the parameters and P(X gt 6) .

If a binomial distribution has mean 2.4 and variance is 1.44, then n=

A : In a binomial distribution , if n=10, q=0.6 then variance =2.4. R : If X follows binomial distribution with parameters n, p then variance =npq.

For a binomial variate X with n=6 , if P(X=2)=9P(X=4) , then its variance is

AAKASH SERIES-RANDOM VARIABLE -EXERCISE - II
  1. If the standerd deviation of the binomial distribution (q+p)^(16) is 2...

    Text Solution

    |

  2. If a binomial distribution has mean 2.4 and variance is 1.44, then n=

    Text Solution

    |

  3. If the mean of a binomial distribution with 9 trials is 6, then its va...

    Text Solution

    |

  4. If the mean of the binomial distribution is 100. Then standard deviati...

    Text Solution

    |

  5. Four bad apples are mixed accidentally with 20 good apples. Probabilit...

    Text Solution

    |

  6. Two cards are drawn successively with replacement . The mean of number...

    Text Solution

    |

  7. The mean and variance of a random variable X having binomial distribut...

    Text Solution

    |

  8. The least number of times a fair coin must be tossed so that the proba...

    Text Solution

    |

  9. The probabilty of hitting a target is 1/3. The least number of times t...

    Text Solution

    |

  10. The mean and variance of a random variable X having a binomial distrib...

    Text Solution

    |

  11. In a binomial distribution, mean = 25, variance = 20 then P(X le 100)=

    Text Solution

    |

  12. If the mean and variance of a binomial variable X are 2 and 1 respecti...

    Text Solution

    |

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

    Text Solution

    |

  14. For a binomial variate X if n=5, and P(X=1)=8P(X=3), thenp=

    Text Solution

    |

  15. X follows a binomial distribution with parameters n and p where 0 lt p...

    Text Solution

    |

  16. Suppose X is binomial distribution with parameters n = 100 and p = 1/...

    Text Solution

    |

  17. Suppose X is a binomial distribution with parameters n = 100 and p=(1)...

    Text Solution

    |

  18. A coin is tossed any number of times until a head appears. If x donote...

    Text Solution

    |

  19. A fair coin is tossed n times. Let x be random variable denoting the n...

    Text Solution

    |

  20. When a coin is tossed n times, if the probability for getting 6 heads ...

    Text Solution

    |