Home
Class 12
MATHS
A rondom variable X has its range {-1,0,...

A rondom variable X has its range {-1,0,1} if its mean is 0.2 and P(x=0) =0.2 then P(x=1) =

A

`0.1`

B

`0.7`

C

`0.4`

D

`0.5`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • AP EAMCET ( ONLINE QUESTION PAPER 2018 SOLVED)

    TS EAMCET PREVIOUS YEAR PAPERS|Exercise MATHEMATICS|80 Videos

  • AP EAMCET ENGINEERING ENTRANCE EXAM ONLINE QUESTION PAPER 2019 (SOLVED)

    TS EAMCET PREVIOUS YEAR PAPERS|Exercise Mathematics|80 Videos

Similar Questions

Explore conceptually related problems

A randomm variable X takes the value -1,0,1. It's mean is 0.6. If (X=0)=0.2 then P(X=1)=

A random variable X takes the values 0,1,2, it's mean is 0.6. If P(X=0)=0.5 then P(X=1)=

A random varible X has its range :1,2,3}. If P(X=1)=c, P(X=2)=3c,P(X=3)=5c, then c=

A: A random variable X has the range {1,2,3}. If P(X=1)=c, P(X=2)=3c,P(X=3)=6c then c=1//10 . R: If : S rarr R is a discreate random variable with range (x_(1), x_(2), x_(3),…………}" then" sum _(r=1)^(infty) (X=x)=1

A random variable X has its range {1,2,3}. If P(X=1)=1//6, P(X=2)=1//3.P(X=3)=1//2 then mean =

TS EAMCET PREVIOUS YEAR PAPERS-AP EAMCET ENGINEERING ENTRANCE EXAM -Mathematics
  1. Let alpha be root of x^(2)+x+1=0 and suppose that a fair die is thro...

    Text Solution

    |

  2. Suppose that a bag a contains n red and 2 black balls and another bag ...

    Text Solution

    |

  3. A rondom variable X has its range {-1,0,1} if its mean is 0.2 and P(x=...

    Text Solution

    |

  4. There are 800 families with four children in each family Assuming eq...

    Text Solution

    |

  5. A straight line meets the X and y axes at the points A,B respectively ...

    Text Solution

    |

  6. If the area of the region bounded by the curves y=x =x^(2) and x = y^...

    Text Solution

    |

  7. The set of values that beta can assume so that the pont (0,beta) shoul...

    Text Solution

    |

  8. If (lambda^(2),lambda+1) lambda in z belong to the region between the...

    Text Solution

    |

  9. If the mid points of the sides BC, CA and AB of a triangle ABC are re...

    Text Solution

    |

  10. The distance between the pair of lines represented by x^(2)+2sqrt(2)...

    Text Solution

    |

  11. A pair of lines S =0 together with the lines given by the equation ...

    Text Solution

    |

  12. If the equation of the circle having its centre in the second quadrant...

    Text Solution

    |

  13. The equation of circel passing throught the point (2,8) touching the ...

    Text Solution

    |

  14. The point of intersecntion of the common tangents drawn to the circ...

    Text Solution

    |

  15. The circle S=0 cuts the circle x^(2)+y^(2) -4x+2y-7=0 orthogonally if...

    Text Solution

    |

  16. The equation of the circle which cuts the circles S(1)=x^(2)+y^(2)-...

    Text Solution

    |

  17. The length of the latusrectum of the parabola 20(x^(2)+y^(2)-6x-2y+10)...

    Text Solution

    |

  18. y=3x-2 is a straight line touching the parabola (-3)^(2)=12(x-2) if a...

    Text Solution

    |

  19. If (l,m) is the circumcentre of an equailateral triangle inscribed in...

    Text Solution

    |

  20. The sides of the rectangle of greatest area that can be inscribed in t...

    Text Solution

    |