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#1 Re: Help Me ! » ORDER Statistics (extremely difficult problem) » 2007-08-02 08:25:29

After searching the net I found out that a solution to the problem is involved in the paper "Unified Analysis of Generalized Selection Combining with Normalized Threshold Test Per Branch", which deals with a telecommunication problem.
And it's not easy!!

Thanks for your replies!

#2 Re: Help Me ! » ORDER Statistics (extremely difficult problem) » 2007-07-20 20:23:47

Thanks for your reply!

The problem is the calculation of the probability that

a*min[ x1, x2,..., xn] > x1 + x2 +...+ xn.

If we consider the RV g=min[ x1, x2,..., xn], then its pdf will be 

f_g(g)=n* f(g) (  1-F(g) )^(n-1)

and its cdf

F_g(g)=1- ( 1-F(g) )^n

where f(x) and F(x) are the pdf and cdf of the RV x1, x2,..., xn.

Also, assume that f(x) is the pdf of the normal distribution.

#3 Help Me ! » ORDER Statistics (extremely difficult problem) » 2007-07-17 02:07:41

alioumpa
Replies: 5

Hi all,

I would appreciate any help regarding the following problem:

Consider the ordered random variables (R.Vs) x1 > x2 >, ...> xn. Each R.V is distributed according to the probability density function (pdf) f(x).
The question is: What is the probability that a*min[ x1, x2,..., xn] > x1 + x2 +...+ xn ?, where a is a real number greater than 1.


Sakes

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