Home
Class 12
MATHS
Four unbiased coins are tossed simultane...

Four unbiased coins are tossed simultaneously let x be the random variabvel denoting the number of heads obtained obtain the probability distribution of x find E(x) and var(x) [symvbols have their usual meaning]

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Promotional Banner

Topper's Solved these Questions

  • RANDOM VARIABLE AND ITS DISTRIBUTION

    CHHAYA PUBLICATION|Exercise Long Answer Type Questions|10 Videos

  • RANDOM VARIABLE AND ITS DISTRIBUTION

    CHHAYA PUBLICATION|Exercise Multiple Correct Answer Type|5 Videos

  • RANDOM VARIABLE AND ITS DISTRIBUTION

    CHHAYA PUBLICATION|Exercise Very Short Answer Type Questions|14 Videos

  • QUESTIONS PAPER -2019

    CHHAYA PUBLICATION|Exercise WBJEE 2019|45 Videos

  • REAL NUMBERS

    CHHAYA PUBLICATION|Exercise Exercise (Long Answer Type Questions)|10 Videos

Similar Questions

Explore conceptually related problems

Let x denote the number of heads when 10 unbiased coins are tossed find the probability distribution of x

A coin is tossed 4 times let x denote the number of heads find the probability distribution of X also find the mean and variance of X

A balanced coin is tossed repeatedly until a tail appears if x denotes the number of heads preceding the first tail find the probability distribution of x

Seven unbiased coins are tossed simultaneously at random. Find the probability of getting at most two tails

Seven unbiased coins are tossed simultaneously at random. Find the probability of getting at least two tails.

If 3 unbiased coins are tossed simultaneously describe the sample space and find the probability that at most one head comes.

Seven unbiased coins are tossed simultaneously at random. Find the probability of getting exactly two tails.

Eight unbiased coins tossed simultaneously. Find the probability of getting exactly five heads and at least five heads.

Let X be the random variable of the number of points obtained in single throw of an unbiased die. Then, the value of barX is -

Find out the mean and variance of the following probability distribution: where p_i= P(X=x_1)

CHHAYA PUBLICATION-RANDOM VARIABLE AND ITS DISTRIBUTION -Short Answer Type Questions
  1. Define a random varible on the sample space of the random experi...

    Text Solution

    |

  2. Define two random variable X and Y on the sample space of the rando...

    Text Solution

    |

  3. Examine which one of the following represent the probability distri...

    Text Solution

    |

  4. A random experiment consists of three independent tosses of a fair ...

    Text Solution

    |

  5. Four unbiased coins are tossed simultaneously let x be the random vari...

    Text Solution

    |

  6. Let x denote the sum of digits in the random experiement of throw...

    Text Solution

    |

  7. Let x denote the number of tails preceding the first head when a...

    Text Solution

    |

  8. In a box there are 5 watches of which 2 are known to be defective ...

    Text Solution

    |

  9. Five defective bulbs are accidentally mixed with 20 good ones it i...

    Text Solution

    |

  10. From a lot of 25 ariticles containing 5 defective a sample of 4...

    Text Solution

    |

  11. Two cards are drawn simultaneously (or successively without repl...

    Text Solution

    |

  12. A discrete random variable x has the following probability distrub...

    Text Solution

    |

  13. A random variable x has the following probability function (...

    Text Solution

    |

  14. For what value of k will the function f(x) =kx x=1,2,3 ...., n be a ...

    Text Solution

    |

  15. The probability distribution of a random variable x is as follows ...

    Text Solution

    |

  16. Let x denote the number of heads when 10 unbiased coins are toss...

    Text Solution

    |

  17. In a given business venture a man can make a profit of Rs 300 with p...

    Text Solution

    |