Home
Class 12
MATHS
Find the expectation of the number of he...

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

Promotional Banner

Topper's Solved these Questions

  • BINARY OPERATIONS

    RD SHARMA ENGLISH|Exercise All Questions|226 Videos

  • CONTINUITY

    RD SHARMA ENGLISH|Exercise All Questions|282 Videos

Similar Questions

Explore conceptually related problems

Find the probability distribution of X ; the number of heads in two tosses of a coin ( or a simultaneous toss of two coins).

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

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

Find the mean and variance of the number of heads in the two tosses of a coin.

Find the mean, variance and standard deviation of the number of heads in a simultaneous toss of three coins.

Find the probability of getting two heads in two tosses of a coin.

A coin is tossed until a head appears. What is the expectation of the number of tosses required ?

Find the probability distribution of (i) number of heads in two tosses of a coin. (ii) number of tails in the simultaneous tosses of three coins. (iii) number of heads in four tosses of a coin.

Find the probability distribution for number of heads obtained in three tosses of a coin.

Find the probability distribution for number of heads obtained in two tosses of a coin.

RD SHARMA ENGLISH-BINOMIAL DISTRIBUTION -All Questions
  1. A pair of dice is thrown 5 times. If getting a doublet is considered a...

    Text Solution

    |

  2. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bu...

    Text Solution

    |

  3. Find the expectation of the number of heads in 15 tosses of a coin.

    Text Solution

    |

  4. Can the mean of a binomial distribution be less than its variance?

    Text Solution

    |

  5. Determine the binomial distribution whose mean is 9 and variance 6.

    Text Solution

    |

  6. If the mean and variance of a binomial distribution are respectively 9...

    Text Solution

    |

  7. If the sum of the mean and variance of a binomial distribution for 5 ...

    Text Solution

    |

  8. Determine the binomial distribution whose mean is 20 and variance 16.

    Text Solution

    |

  9. The mean of a binomial distribution is 20, and the standard deviation ...

    Text Solution

    |

  10. If the probability of defective bolts is 0.1, find the mean and standa...

    Text Solution

    |

  11. If on an average 9 ships out of 10 arrive safely to ports, find the me...

    Text Solution

    |

  12. In eight throws of a die 5 or 6 is considered a success, find the mean...

    Text Solution

    |

  13. Find the expected number of boys in a family with 8 children, assuming...

    Text Solution

    |

  14. A die is thrown thrice. A success is 1 or 6 in a throw. Find the mean ...

    Text Solution

    |

  15. A pair of dice is thrown 4 times. If getting a doublet is considere...

    Text Solution

    |

  16. From a lot of 15 bulbs which include 5 defectives, a sample of 2 bulbs...

    Text Solution

    |

  17. Three cards are drawn successively with replacement from a well shu...

    Text Solution

    |

  18. In a binomial distribution, if n=20 ,\ q=0. 75 ,then write its mean.

    Text Solution

    |

  19. A binomial distribution has mean 5 and variance 4. Find the number of ...

    Text Solution

    |

  20. In a group of 200 items, if the probability of getting a defective ite...

    Text Solution

    |