Obtain $ sumlimits_{substack{i}}^{} mathbf{N}(x_{i}) $ from $ sumlimits_{substack{i}}^{}...












0












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Is it possible to obtain $ sumlimits_{substack{i}}^{} mathbf{N}(x_{i}) $ from $ sumlimits_{substack{i}}^{} dfrac{1}{mathbf{N}(x_{i})},$



where, $mathbf{N}(x_{i})=Y+1$ is a random variable with $Y sim Bin(n-1, r_{n}).$



The variables $mathbf{N}(x_{i})$ for $i=1..n$ are not independent.










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  • $begingroup$
    What is $mathbf{N}$?
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:18










  • $begingroup$
    Sorry, I did a mistake. I edited the question.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:19










  • $begingroup$
    Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:21










  • $begingroup$
    Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:22








  • 1




    $begingroup$
    You should write all details in the question itself and not in comments.
    $endgroup$
    – Martund
    Dec 14 '18 at 0:25
















0












$begingroup$


Is it possible to obtain $ sumlimits_{substack{i}}^{} mathbf{N}(x_{i}) $ from $ sumlimits_{substack{i}}^{} dfrac{1}{mathbf{N}(x_{i})},$



where, $mathbf{N}(x_{i})=Y+1$ is a random variable with $Y sim Bin(n-1, r_{n}).$



The variables $mathbf{N}(x_{i})$ for $i=1..n$ are not independent.










share|cite|improve this question











$endgroup$












  • $begingroup$
    What is $mathbf{N}$?
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:18










  • $begingroup$
    Sorry, I did a mistake. I edited the question.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:19










  • $begingroup$
    Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:21










  • $begingroup$
    Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:22








  • 1




    $begingroup$
    You should write all details in the question itself and not in comments.
    $endgroup$
    – Martund
    Dec 14 '18 at 0:25














0












0








0





$begingroup$


Is it possible to obtain $ sumlimits_{substack{i}}^{} mathbf{N}(x_{i}) $ from $ sumlimits_{substack{i}}^{} dfrac{1}{mathbf{N}(x_{i})},$



where, $mathbf{N}(x_{i})=Y+1$ is a random variable with $Y sim Bin(n-1, r_{n}).$



The variables $mathbf{N}(x_{i})$ for $i=1..n$ are not independent.










share|cite|improve this question











$endgroup$




Is it possible to obtain $ sumlimits_{substack{i}}^{} mathbf{N}(x_{i}) $ from $ sumlimits_{substack{i}}^{} dfrac{1}{mathbf{N}(x_{i})},$



where, $mathbf{N}(x_{i})=Y+1$ is a random variable with $Y sim Bin(n-1, r_{n}).$



The variables $mathbf{N}(x_{i})$ for $i=1..n$ are not independent.







calculus probability sequences-and-series probability-theory






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share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Dec 14 '18 at 0:28







Mounia Hamidouche

















asked Dec 14 '18 at 0:17









Mounia HamidoucheMounia Hamidouche

32419




32419












  • $begingroup$
    What is $mathbf{N}$?
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:18










  • $begingroup$
    Sorry, I did a mistake. I edited the question.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:19










  • $begingroup$
    Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:21










  • $begingroup$
    Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:22








  • 1




    $begingroup$
    You should write all details in the question itself and not in comments.
    $endgroup$
    – Martund
    Dec 14 '18 at 0:25


















  • $begingroup$
    What is $mathbf{N}$?
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:18










  • $begingroup$
    Sorry, I did a mistake. I edited the question.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:19










  • $begingroup$
    Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
    $endgroup$
    – Sean Roberson
    Dec 14 '18 at 0:21










  • $begingroup$
    Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
    $endgroup$
    – Mounia Hamidouche
    Dec 14 '18 at 0:22








  • 1




    $begingroup$
    You should write all details in the question itself and not in comments.
    $endgroup$
    – Martund
    Dec 14 '18 at 0:25
















$begingroup$
What is $mathbf{N}$?
$endgroup$
– Sean Roberson
Dec 14 '18 at 0:18




$begingroup$
What is $mathbf{N}$?
$endgroup$
– Sean Roberson
Dec 14 '18 at 0:18












$begingroup$
Sorry, I did a mistake. I edited the question.
$endgroup$
– Mounia Hamidouche
Dec 14 '18 at 0:19




$begingroup$
Sorry, I did a mistake. I edited the question.
$endgroup$
– Mounia Hamidouche
Dec 14 '18 at 0:19












$begingroup$
Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
$endgroup$
– Sean Roberson
Dec 14 '18 at 0:21




$begingroup$
Is the distribution of $mathbf{N}$ known? Otherwise we may only be able to obtain an estimate via the HM-AM-GM inequalities.
$endgroup$
– Sean Roberson
Dec 14 '18 at 0:21












$begingroup$
Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
$endgroup$
– Mounia Hamidouche
Dec 14 '18 at 0:22






$begingroup$
Yes, it is a binomially distributed (a modified distribution because I know that the random variable will never take 0 as a value). But the variables are not independent.
$endgroup$
– Mounia Hamidouche
Dec 14 '18 at 0:22






1




1




$begingroup$
You should write all details in the question itself and not in comments.
$endgroup$
– Martund
Dec 14 '18 at 0:25




$begingroup$
You should write all details in the question itself and not in comments.
$endgroup$
– Martund
Dec 14 '18 at 0:25










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