Home
Class 12
MATHS
If X is a r.v., then...

If X is a r.v., then

A

Var `(X)ge 0`

B

Var `(X)gt0`

C

Var `(X)=0`

D

Var `(X)ne0`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PLANE

    NIKITA PUBLICATION|Exercise MULTIOLE CHOICE QUESTIONS|154 Videos

  • QUESTION PAPER MHT-CET 2016

    NIKITA PUBLICATION|Exercise MCQs|50 Videos

Similar Questions

Explore conceptually related problems

If X is the r.v. having values from sample space S and P (x) is the p.m.f. of X, x in S , then

If X is a continuous r.v., then the function f(x) is said to p.d.f. of X, if

If the p.d.f. of a r.v. X is given as then F(0)=

If a d.r.v. X has the following probability distribution: then k = …….

For the following distribution function F (X) of a r.v. X P(3 lt X le 5)=

A r.v. X assumes values 1, 2, 3, …, n with equal probabilities. If Var (X) = E (X), then n =

A r.v. X assumes values 1, 2, 3, …, n with equal probabilities. If Var (X) = 4 E (X), then n =

Let R be a relation on the set A of ordered pairs of integers defined by (x,y)R(u,v) iff xv=yu .Show that R is an equivalence relation.

Let R be a relation on the set A of ordered pairs of positive integers defined by (x,y)R(u,v) if and only if xv=yu Show that R is an equivalence relation.

NIKITA PUBLICATION-PROBABILITY DISTRIBUTION-MCQs
  1. A random variable is said to be continuous, if

    Text Solution

    |

  2. If X is the r.v. having values from sample space S and P (x) is the p...

    Text Solution

    |

  3. If X is a r.v., then

    Text Solution

    |

  4. If X is a continuous r.v., then the function f(x) is said to p.d.f. of...

    Text Solution

    |

  5. Number of attempts required by a candidate to clear I.A.S. examination...

    Text Solution

    |

  6. Four cars are selected from a showroom. X = Number of cars having di...

    Text Solution

    |

  7. A highway-safety group is interested in studying the speed (in km/hour...

    Text Solution

    |

  8. A page in a book can have at most 300 words. X = Number of misprints o...

    Text Solution

    |

  9. The random variable X is the amount of syrup prescript by a physician....

    Text Solution

    |

  10. Number of floors in a building. Then the random variable is

    Text Solution

    |

  11. 20 white rats are available for an experiment. Twelve rats are males a...

    Text Solution

    |

  12. A sample of 10 batteries is selected X = Number of batteries that fail...

    Text Solution

    |

  13. Number of students present in a class of 50 students Then the random...

    Text Solution

    |

  14. A social worker is interested in knowing the number of illiterates in ...

    Text Solution

    |

  15. A person on a high protein diet is interested in the random variable X...

    Text Solution

    |

  16. If a RV X="Height of a sky scrapper" Then the random variable is

    Text Solution

    |

  17. An economist is interested in the random variable X, the number of une...

    Text Solution

    |

  18. A player goes to gymnasium ragularly. X = Reduction in his weight in a...

    Text Solution

    |

  19. A quality control manager notes down the life times of 10 electronic c...

    Text Solution

    |

  20. If P(X=x)=(x-5)/(4),x=5.5,6.5,7.5, then

    Text Solution

    |