Home
Class 12
MATHS
Let X be the random variable with follow...

Let X be the random variable with following probability distribution.
`therefore E(X^(2))= ...... `

A

3.6

B

24.6

C

14.6

D

14.8

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Practice Paper - 13 (Section - A (Choose the correct option))|6 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Practice Paper - 13 (Section - B (Answer the following questions))|4 Videos

  • PROBABILITY

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Fillers) |5 Videos

  • MATRICES

    KUMAR PRAKASHAN|Exercise Practice Paper - 3 (Section - D)|1 Videos

  • RELATIONS AND FUNCTIONS

    KUMAR PRAKASHAN|Exercise Practice Paper - 1 (Section - D)|2 Videos

Similar Questions

Explore conceptually related problems

Find mean of following probability distribution.

A random variable X has the following probability distribution : then P(X le 1) = ….......

Find mean of the following probability distribution.

Let X be a random variable with probability distribution. then E(5X-2)= ………. .

For the following probability distribution E(X^(2)) is equal to .......

Mean of the following probability distribution is …………

For the following probability distribution : E(X) is equal to .......

A random variable X has the following probability distribution: Determine (i) K (ii) P(X lt 3) (iii) P(X gt 6) (iv) P(0 lt X lt 3)

Let X be a discrete random variable whose probability distribution is defined as follows: P(X=x)={(k(x+1)",",x="1, 2, 3, 4"),(2kx",",x="5,6,7"),(0"", "Otherwise"):} Where k is a constant. Calculate (i) the value of k (ii) E(X) (iii) Standard deviation of X.

What is the mean of f(x)=3x+2 where x is a random variable with probability distribution

KUMAR PRAKASHAN-PROBABILITY-Multiple Choice Questions (MCQs)
  1. Mean and variance of binomial distribution are 3 and 2 respectively th...

    Text Solution

    |

  2. The probability function of the binomial distribution is P(x)= ((6), (...

    Text Solution

    |

  3. Let X be the random variable with following probability distribution. ...

    Text Solution

    |

  4. The mean and standard deviation of a random variable X are given by E(...

    Text Solution

    |

  5. Let X be a random variable with probability distribution. then E...

    Text Solution

    |

  6. Two balanced dice are tossed 500 times. If sum of integers obtained o...

    Text Solution

    |

  7. A probability distribution of random variable X is as follows. b...

    Text Solution

    |

  8. A man takes a step forward with probability 0.4 and backwards with pro...

    Text Solution

    |

  9. omega is the cube root of 1 and omega ne 1. Now r(1), r(2) and r(3) ar...

    Text Solution

    |

  10. One number is selected from the set S={1,2,3, …., 50} A={n in S/...

    Text Solution

    |

  11. In binomial distribution of random variable X if mean = np and varianc...

    Text Solution

    |

  12. In binomial distribution of random variable X if parameter n = 5 and p...

    Text Solution

    |

  13. Random variable X takes integer values from 1 to n with equal probabil...

    Text Solution

    |

  14. 8 coins are tossed togather. Then ………. is the probability of an event ...

    Text Solution

    |

  15. Mean and variance of the binomial distribution is 4 and 3 respectively...

    Text Solution

    |

  16. One ticket is selected from pack of 100 tickets numbered with 00, 01, ...

    Text Solution

    |

  17. Mean and variance of variable X of the binomial distribution are (7)/(...

    Text Solution

    |

  18. X and Y are independent binomial variables. B(5,(1)/(2)) and B(7,(1)/...

    Text Solution

    |

  19. 10 % bulbs are defective produced by some factory. 5 bulbs are selecte...

    Text Solution

    |

  20. Match the following Section I to Section II

    Text Solution

    |