Home
Class 11
MATHS
If X ~ B (n,p) with n=10 , p = 0.4...

If ` X ~ B (n,p) ` with `n=10 , p = 0.4 ` the ` E (X^(2 ))=?`

A

4

B

`2.4`

C

`3.6`

D

`18.4`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2017

    MARVEL PUBLICATION|Exercise QUESTION|50 Videos

  • SEQUENCES AND SERIES

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|81 Videos

Similar Questions

Explore conceptually related problems

If X~B(n,p) with n=10,p=0.4 , then E(X^(2))=

Given that X ~ B (n, P) . If n = 10, P = 0.4 then E(X) = ...............

For X ~ B (n,p), n = 10, E (X) = 5, then Var (X) =

Let X ~ B (n,p) , if E (X ) = 5 , "Var" (X ) =2.5 then p (X lt 1)=

For X ~ B (n,p),if E(X) = 5, Var (X) = 2.5, then p =

For X ~ B (n,p), n = 10, E (X) = 5, then p =

If X to B ( n= 10,p=0.5) then : p(X ge 9)= …

For X ~ B (n = 10, p = 0.2), P (X le 8) =

For X ~ B (n,p),if E(X) = 18, Var(X) =12, then p =

MARVEL PUBLICATION-QUESTION PAPER 2018-QUESTION
  1. int (0) ^(pi //4) x. Sec ^(2) x dx =?

    Text Solution

    |

  2. In DeltaABC, with usual notations, if a,b,c are in AP then acos^(2)((C...

    Text Solution

    |

  3. If x= e^(theta )(sin theta - cos theta ) , y= e^(theta ) ( sin ...

    Text Solution

    |

  4. The number of solutions of sin x+ sin 3x + sin 5x=0 in the ...

    Text Solution

    |

  5. IF tan ^(-1) 2x + tan ^(-1) 3x =(pi)/(4) , then x=

    Text Solution

    |

  6. Matrix A =[(1,2,3),(1,1,5),(2,4,7)] then the value of A(31) A(3...

    Text Solution

    |

  7. The contrapositive of the statement: "If the weather is fine then my f...

    Text Solution

    |

  8. If =(x)/(x^(2)+1) is increasing function, then the value of x lies in

    Text Solution

    |

  9. If X={4^(n)-3n-1:n in N} and {9(n-1):n in N}, the prove that X sub Y.

    Text Solution

    |

  10. The statement pattern p^^(~p^^q)is

    Text Solution

    |

  11. If the line y= 4x-5 toches to the curve y^(2) = ax^(3) +b ...

    Text Solution

    |

  12. The sides of a recyangle are given by x=+- a and y= +-b The...

    Text Solution

    |

  13. The minimum value of the function f(x) = x log x is

    Text Solution

    |

  14. If X ~ B (n,p) with n=10 , p = 0.4 the E (X^(2 ))=?

    Text Solution

    |

  15. The general solution of differential equation (dx) /( dy) = cos...

    Text Solution

    |

  16. IF planes bar r . ( p hati - hatj + 2 hatk )+3=0 and bar r .( 2...

    Text Solution

    |

  17. The order of the differential equation of all parabolas , whose...

    Text Solution

    |

  18. IF lines (x-1)/(2) =(y+1)/(3) =(z-1)/(4) and x-3 =(y-k) /(2) = z ...

    Text Solution

    |

  19. If a line makes angle 120^(@) and 60^(@) with the positive directions ...

    Text Solution

    |

  20. L and M are two points with position vectors 2vec(a)-vec(b)andvec(a)+2...

    Text Solution

    |