Home
Class 12
MATHS
A random variable X has the following di...

A random variable X has the following distribution The mean and variance of X are

A

1,1

B

1,2

C

2,1

D

2,2

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PERMUTATION AND COMBINATIONS

    HIMALAYA PUBLICATION|Exercise Question Bank|104 Videos
  • PROGRESSIONS

    HIMALAYA PUBLICATION|Exercise QUESTION BANK|97 Videos

Similar Questions

Explore conceptually related problems

A random variable X follows binomial distribution with mean alpha and variance beta . Then,

A random variable ‘X’ has the following probability distribution: Then the value of k is

If random variable X has the following probability distribution then the value of 'a' is

A random variable X has the distribution. Then , variance of the distribution, is

A random variable X has the following probability distribution : find the value of k

A random variable X has the following probability distribution : P(X ge2)

A random variable X has the following probability distribution. Find the value of K.

A random variable x has the following probability distribution. Determine (i) k (ii) p(xlt3)

Find the mean for the following distribution.

HIMALAYA PUBLICATION-PROBABILITY-QUESTION BANK
  1. A random variable has the following distribution The value of of k an...

    Text Solution

    |

  2. A coin is tossed 3 times. The probability of getting head once and tai...

    Text Solution

    |

  3. A random variable X has the following distribution The mean and varian...

    Text Solution

    |

  4. The probability of a man hitting the target is 1/4. If he fires 7 time...

    Text Solution

    |

  5. The probability of getting a total score of 7 when two unbiased dice a...

    Text Solution

    |

  6. One of the two events A and B must occur. If P(A) = 2/3. P(B), the odd...

    Text Solution

    |

  7. A letter is selected at random from the letters of the word "PROBABILI...

    Text Solution

    |

  8. The probability of two events A and B are 0.25 and 0.40 respectively. ...

    Text Solution

    |

  9. The probability distribution of random variable X is given below. Then...

    Text Solution

    |

  10. In a competition A, B and C are participants. The probability that A w...

    Text Solution

    |

  11. If S is a sample space, P(A) = 1/3 P(B) and S = A cup B where A and B ...

    Text Solution

    |

  12. The probability distribution of a random variable X is given below. Th...

    Text Solution

    |

  13. A random variable X takes the values 0,1 and 2. If P(X=1)=P(X=2) and P...

    Text Solution

    |

  14. A bag contains 5 black balls, 4 white balls and 3 red balls. If a ball...

    Text Solution

    |

  15. The probability of getting qualified in IITJEE and EAMCET by a student...

    Text Solution

    |

  16. One die and a coin are tossed simultaneously, the probability of getti...

    Text Solution

    |

  17. If P(A cup B) = 0.8, P(A cap B) = 0.3, then P (bar(A)) + P (bar (B)) =

    Text Solution

    |

  18. A coin is tossed n times. The probability of getting head atleast once...

    Text Solution

    |

  19. A box $X$ contains 2 white and 3 black balls and another bag Y contain...

    Text Solution

    |

  20. A random variable X takes the values 0,1,2,3 and its means is 1.3. If ...

    Text Solution

    |