Find the cumulative distribution function of Y = XII{X ≤ b}.












0












$begingroup$


Assume that X is a continuous and nonnegative random variable with the cumulative distribution function Fx. Let b > 0.



a) Find the cumulative distribution function of Y = XII{X ≤ b}.



b) Apply the general formula from (a) to exponential distribution with parameter
λ > 0.



I'm having trouble understanding the notation for Y = XII{X ≤ b} What does "II" mean?










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$endgroup$








  • 1




    $begingroup$
    X = 10. And XII = 12.
    $endgroup$
    – wolfies
    Jan 17 at 17:46










  • $begingroup$
    So it's like saying Y=X+2?
    $endgroup$
    – Slam95
    Jan 17 at 18:02
















0












$begingroup$


Assume that X is a continuous and nonnegative random variable with the cumulative distribution function Fx. Let b > 0.



a) Find the cumulative distribution function of Y = XII{X ≤ b}.



b) Apply the general formula from (a) to exponential distribution with parameter
λ > 0.



I'm having trouble understanding the notation for Y = XII{X ≤ b} What does "II" mean?










share|cite|improve this question









$endgroup$








  • 1




    $begingroup$
    X = 10. And XII = 12.
    $endgroup$
    – wolfies
    Jan 17 at 17:46










  • $begingroup$
    So it's like saying Y=X+2?
    $endgroup$
    – Slam95
    Jan 17 at 18:02














0












0








0





$begingroup$


Assume that X is a continuous and nonnegative random variable with the cumulative distribution function Fx. Let b > 0.



a) Find the cumulative distribution function of Y = XII{X ≤ b}.



b) Apply the general formula from (a) to exponential distribution with parameter
λ > 0.



I'm having trouble understanding the notation for Y = XII{X ≤ b} What does "II" mean?










share|cite|improve this question









$endgroup$




Assume that X is a continuous and nonnegative random variable with the cumulative distribution function Fx. Let b > 0.



a) Find the cumulative distribution function of Y = XII{X ≤ b}.



b) Apply the general formula from (a) to exponential distribution with parameter
λ > 0.



I'm having trouble understanding the notation for Y = XII{X ≤ b} What does "II" mean?







probability probability-theory probability-distributions






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share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 17 at 17:26









Slam95Slam95

51




51








  • 1




    $begingroup$
    X = 10. And XII = 12.
    $endgroup$
    – wolfies
    Jan 17 at 17:46










  • $begingroup$
    So it's like saying Y=X+2?
    $endgroup$
    – Slam95
    Jan 17 at 18:02














  • 1




    $begingroup$
    X = 10. And XII = 12.
    $endgroup$
    – wolfies
    Jan 17 at 17:46










  • $begingroup$
    So it's like saying Y=X+2?
    $endgroup$
    – Slam95
    Jan 17 at 18:02








1




1




$begingroup$
X = 10. And XII = 12.
$endgroup$
– wolfies
Jan 17 at 17:46




$begingroup$
X = 10. And XII = 12.
$endgroup$
– wolfies
Jan 17 at 17:46












$begingroup$
So it's like saying Y=X+2?
$endgroup$
– Slam95
Jan 17 at 18:02




$begingroup$
So it's like saying Y=X+2?
$endgroup$
– Slam95
Jan 17 at 18:02










1 Answer
1






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oldest

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1












$begingroup$

My guess is that
$$
Y=XI(Xleq b)=begin{cases}
X&text{if}, Xleq b\
0& text{if}, X>b
end{cases}
$$

so $Y$ equals $X$ truncated at $b$.






share|cite|improve this answer









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    $begingroup$

    My guess is that
    $$
    Y=XI(Xleq b)=begin{cases}
    X&text{if}, Xleq b\
    0& text{if}, X>b
    end{cases}
    $$

    so $Y$ equals $X$ truncated at $b$.






    share|cite|improve this answer









    $endgroup$


















      1












      $begingroup$

      My guess is that
      $$
      Y=XI(Xleq b)=begin{cases}
      X&text{if}, Xleq b\
      0& text{if}, X>b
      end{cases}
      $$

      so $Y$ equals $X$ truncated at $b$.






      share|cite|improve this answer









      $endgroup$
















        1












        1








        1





        $begingroup$

        My guess is that
        $$
        Y=XI(Xleq b)=begin{cases}
        X&text{if}, Xleq b\
        0& text{if}, X>b
        end{cases}
        $$

        so $Y$ equals $X$ truncated at $b$.






        share|cite|improve this answer









        $endgroup$



        My guess is that
        $$
        Y=XI(Xleq b)=begin{cases}
        X&text{if}, Xleq b\
        0& text{if}, X>b
        end{cases}
        $$

        so $Y$ equals $X$ truncated at $b$.







        share|cite|improve this answer












        share|cite|improve this answer



        share|cite|improve this answer










        answered Jan 17 at 21:59









        Foobaz JohnFoobaz John

        22.2k41452




        22.2k41452






























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