Convergence of expectation of random variables Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Sequence of independent random variables: Convergence, martingales, uniform integrabilityConvergence of random variableConvergence equivalent random sequencesconvergence of expectation sum of infinite random variablesDifference of two random variables and convergenceConvergence of expectations of random variablesConvergence of exponentially-distributed random variablesConvergence of conditional expectation of multiplication of two sequencesConvergence in probability of sum of bounded random variables implies finite expectationConvergence of random variable Poisson distribution

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Convergence of expectation of random variables



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)Sequence of independent random variables: Convergence, martingales, uniform integrabilityConvergence of random variableConvergence equivalent random sequencesconvergence of expectation sum of infinite random variablesDifference of two random variables and convergenceConvergence of expectations of random variablesConvergence of exponentially-distributed random variablesConvergence of conditional expectation of multiplication of two sequencesConvergence in probability of sum of bounded random variables implies finite expectationConvergence of random variable Poisson distribution










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$begingroup$


$X$ is a non negative random variable . Define :



$ Y_n = sum_k=1^inftyfrack2^nmathbbI(frack-12^n le X < frack2^n)$



Does $ mathbbE[Y_n] rightarrow mathbbE[X] $ as $n rightarrow infty$ ?



I have a hunch that $mathbbE[Y_n]$ might be decreasing , but I am unable to prove it rigorously .










share|cite|improve this question









$endgroup$
















    0












    $begingroup$


    $X$ is a non negative random variable . Define :



    $ Y_n = sum_k=1^inftyfrack2^nmathbbI(frack-12^n le X < frack2^n)$



    Does $ mathbbE[Y_n] rightarrow mathbbE[X] $ as $n rightarrow infty$ ?



    I have a hunch that $mathbbE[Y_n]$ might be decreasing , but I am unable to prove it rigorously .










    share|cite|improve this question









    $endgroup$














      0












      0








      0





      $begingroup$


      $X$ is a non negative random variable . Define :



      $ Y_n = sum_k=1^inftyfrack2^nmathbbI(frack-12^n le X < frack2^n)$



      Does $ mathbbE[Y_n] rightarrow mathbbE[X] $ as $n rightarrow infty$ ?



      I have a hunch that $mathbbE[Y_n]$ might be decreasing , but I am unable to prove it rigorously .










      share|cite|improve this question









      $endgroup$




      $X$ is a non negative random variable . Define :



      $ Y_n = sum_k=1^inftyfrack2^nmathbbI(frack-12^n le X < frack2^n)$



      Does $ mathbbE[Y_n] rightarrow mathbbE[X] $ as $n rightarrow infty$ ?



      I have a hunch that $mathbbE[Y_n]$ might be decreasing , but I am unable to prove it rigorously .







      probability-theory expected-value






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Mar 27 at 3:42









      JohnJohn

      363113




      363113




















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