Home
Class 12
MATHS
Let 'X' be a discrete random variable. T...

Let 'X' be a discrete random variable. The probability distribution of X is given below:
Then E(X) is equal to :

A

6

B

4

C

3

D

-5

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    MODERN PUBLICATION|Exercise EXERCISE|543 Videos

  • MOCK TEST-3

    MODERN PUBLICATION|Exercise EXERCISE|35 Videos

  • RELATIONS AND FUNCTION

    MODERN PUBLICATION|Exercise EXAMPLE|212 Videos

Similar Questions

Explore conceptually related problems

Let X be a discrete random variable. The probaility distribution of X is given below: The E (X) is equal to

Let X be a random variable. The probability distribution of X is given below: The E(X) is equal to

Probability distribution of X is given below, then the value of K is :

Let X be a discrete random variable whose probability distribution is defined as follows: P(X=x)={(k(x+1), fo r(x=1,2,3,4)),(2kx, fo r (x=5,6,7)),(0, otherwise):} where k is constant, Calculate E(X).

Let X be a discrete random variable whose probability distribution is defined as follows: P(X=x)={(k(x+1), fo r(x=1,2,3,4)),(2kx, fo r (x=5,6,7)),(0, otherwise):} where k is constant, Calculate Standard deviation of X

Let X be a discrete random variable whose probability distribution is defined as follows: P(X=x)={(k(x+1), fo r(x=1,2,3,4)),(2kx, fo r (x=5,6,7)),(0, otherwise):} where k is constant, Calculate the vlaue of k.

A random variable has the following probability distribution : Find K.

A random variable has the following probability distribution : Find K.

MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. Let A and B be two events. If P(A)=0.6, P(B)=0.2, P(A/B)=0.5, then P(A...

    Text Solution

    |

  2. If A and B are independent events such that 0 lt P (A) lt 1 and 0 lt P...

    Text Solution

    |

  3. Let 'X' be a discrete random variable. The probability distribution of...

    Text Solution

    |

  4. Let 'X' be a discrete random variable assuming values x1, x2, ...........

    Text Solution

    |

  5. Two events A and B will be independent, if:

    Text Solution

    |

  6. If A and B are two events such that AcapBnephi, P((A)/(B))=P((B)/(A))...

    Text Solution

    |

  7. If P(E)=11/36, P(F)=5/36 and P(EnnF)=2/36, then the value of P(E/F) is...

    Text Solution

    |

  8. Two cards are drawn at random and without replacement from a pack of 5...

    Text Solution

    |

  9. An urn contains 10 black and 5 white balls. Two balls are drawn from t...

    Text Solution

    |

  10. Probability distribution of X is given below, then the value of K is ...

    Text Solution

    |

  11. If A and B are any two events such that : P(A) + P(B) – P(A and B) = P...

    Text Solution

    |

  12. In a single throw of a pair od die, the probability of getting total o...

    Text Solution

    |

  13. A and B are two mutually exclusive events of an experiment. If P (not ...

    Text Solution

    |

  14. P(E/F) is equal to :

    Text Solution

    |

  15. If P(A)=0.3, P(B)=0.4, find P(AuuB). where A and B are independent eve...

    Text Solution

    |

  16. A pair of coins is tossed once. Find the probability of showing at lea...

    Text Solution

    |

  17. A and B are events such that 2P(A)=P(B)=5/13, P(A/B)=2/5, then P(AuuB)...

    Text Solution

    |

  18. The probability of obtaining an even prime number on each die, when a ...

    Text Solution

    |

  19. If P(A)=3/5 and P(B)=1/5, find P(AnnB) if A and B are independent even...

    Text Solution

    |

  20. If P(A)=7/13, P(B)=9/13 and P(AnnB)=4/13, evaluate P(A/B).

    Text Solution

    |