Home
Class 12
MATHS
Find the mean and the variance of the nu...

Find the mean and the variance of the number obtained on a throw of an unbiased coin.

Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES OF MATHEMATICAL INDUCTION

    MBD PUBLICATION|Exercise QUESTION BANK|16 Videos

  • RELATION AND FUNCTION

    MBD PUBLICATION|Exercise QUESTION BANK|103 Videos

Similar Questions

Explore conceptually related problems

Find mean and variance of number of heads in three tosses of a fair coin.

A coin is tossed 4 times. Find the mean and variance of the probability distribution of the number of heads.

Find the expectation of the number of tails in 15 tosses of a coin.

An unbiased coin is tossed 4 times. Find the mean and variance of the number of heads obtained.

Find the probability distribution of number of doublets in four throws of a pair of dice. Find also the mean and the variance of the number of doublets.

Two numbers are selected at random (without replacement) from positive integers 2, 3, 4, 5, 6 and 7. Let X denote the larger of the two numbers obtained. Find the mean and variance of the probability distribution of X.

If the sum of the mean and the variance of a binomial distribution for 5 trials is 1,8, find the distribution.

MBD PUBLICATION-PROBABILITY-QUESTION BANK
  1. Two cards are drawn successively with replacement from a well-shuffled...

    Text Solution

    |

  2. From a box containing 32 bulbs out of which 8 are defective 4 bulbs ar...

    Text Solution

    |

  3. A random variable X has the following probability distribution Dete...

    Text Solution

    |

  4. A random variable X has the following probability distribution Dete...

    Text Solution

    |

  5. A random variable X has the following probability distribution Dete...

    Text Solution

    |

  6. A random variable X has the following probability distribution Dete...

    Text Solution

    |

  7. Find the mean and the variance of the number obtained on a throw of an...

    Text Solution

    |

  8. A pair of coins is tossed 7 times. Find the probability of getting e...

    Text Solution

    |

  9. A pair of coins is tossed 7 times. Find the probability of getting a...

    Text Solution

    |

  10. A pair of coins is tossed 7 times. Find the probability of getting a...

    Text Solution

    |

  11. If a pair of dice is thrown 5 times then find the probability of getti...

    Text Solution

    |

  12. Four cards are drawn successively with replacement from a well-shuffle...

    Text Solution

    |

  13. Four cards are drawn successively with replacement from a well-shuffle...

    Text Solution

    |

  14. Four cards are drawn successively with replacement from a well-shuffle...

    Text Solution

    |

  15. In an examination there are twenty multiple choice question each of wh...

    Text Solution

    |

  16. A bag contains 7 balls of different colours. If five balls are drawn s...

    Text Solution

    |

  17. Find the probability of throwing at teast 3 sixes in 5 throws of a dia...

    Text Solution

    |

  18. The probability that a student securing first division ia an examinati...

    Text Solution

    |

  19. Sita and Gita throw a dia alternatively till one of them gets a 6 to w...

    Text Solution

    |

  20. If a random variable X has a binomial distribution B (8,1/2) then find...

    Text Solution

    |