Math Challenge: Who here can solve this problem.

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ManofKnowledge

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#1 ManofKnowledge
Member since 2007 • 40 Posts
Let X and Y be two random variables.
Let X|Y ~ Exponential with mean 1/Y, and Let Y~ Poisson with mean a, where a is any constant.
What is the distribution of Y|X.
This is far more difficult than it might seem. 
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Viedric

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#2 Viedric
Member since 2003 • 949 Posts
I refuse to do math when I'm not in class...
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axillia

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#3 axillia
Member since 2003 • 1104 Posts
I refuse to do math unless it relates to my bank accounts.
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squidder_doa

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#4 squidder_doa
Member since 2006 • 3631 Posts
This could be an insanely clever plan to get somebody to do your homework....
I can't do it, I suck at t3h maths.
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0757691

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#5 0757691
Member since 2003 • 2022 Posts
I refuse to do math unless it relates to my bank accounts.axillia
same here!
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BabyAlf

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#6 BabyAlf
Member since 2006 • 571 Posts
Christ man im stumped. have you the answer?
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The_One_White

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#7 The_One_White
Member since 2006 • 1417 Posts
1......
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194197844077667059316682358889

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#8 194197844077667059316682358889
Member since 2003 • 49173 Posts
That's not math, that's probability/statistics :(
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Taxpaying_Acorn

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#9 Taxpaying_Acorn
Member since 2004 • 4952 Posts
*walks in and looks at the problem* screw that... *leaves*
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MrGrime

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#10 MrGrime
Member since 2007 • 54 Posts

1......The_One_White

 

Do we have a winner folks? 

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MrGrime

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#11 MrGrime
Member since 2007 • 54 Posts

That's not math, that's probability/statistics :(xaos

 

I think probability/statistics is considered math...

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KrAzY_cHrIs

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#12 KrAzY_cHrIs
Member since 2007 • 1132 Posts

Do your own homework!

I am going to take a stab at it and say a is humanitys dertermineation to overcome a problem with logical thought and reason yet B is humanitys cess pit witch must first bash any problem with a crude insturment before it can be deemed impossable.

or the answer is 1 I dunno

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ManofKnowledge

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#13 ManofKnowledge
Member since 2007 • 40 Posts
No I do not know the answer. But I do know it is very complicated. It requires use of measure theory, analysis and probability. It is very complex problem. I know how to set it up, but I can't figure out how to take the integral.
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still_thinking

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#14 still_thinking
Member since 2006 • 908 Posts

I refuse to do math when I'm not in class...
Viedric

I refuse to do math, ever......

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comp_atkins

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#15 comp_atkins
Member since 2005 • 38684 Posts
its been like 6 years since college probability.. those brain cells have other uses now..
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ManofKnowledge

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#16 ManofKnowledge
Member since 2007 • 40 Posts
Define CMF of r.v Y by G, then f(Y|X)=f(X,Y)/f(X) f(X,Y)=f(X|Y)*dG(Y) f(x)=integral(f(X|Y)*dG(Y)) with respect to Y Issue is f(X|Y) is a continuos function. dG(Y) is a discrete function.
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comp_atkins

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#17 comp_atkins
Member since 2005 • 38684 Posts
u should really do your own homework
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zsc4

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#18 zsc4
Member since 2005 • 5233 Posts
I have always been good at maths but at the level I am studying at, this is a bit too advanced for me :P I'm not really getting the question, then again I'm not going to do your homework for you am I :P
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Cyrax-Sektor

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#19 Cyrax-Sektor
Member since 2006 • 12060 Posts

[QUOTE="Viedric"]I refuse to do math when I'm not in class...
still_thinking

I refuse to do math, ever......

That's me.
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ManofKnowledge

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#20 ManofKnowledge
Member since 2007 • 40 Posts
I have always been good at maths but at the level I am studying at, this is a bit too advanced for me :P I'm not really getting the question, then again I'm not going to do your homework for you am I :Pzsc4
What math level are you in.
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ManofKnowledge

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#21 ManofKnowledge
Member since 2007 • 40 Posts
You need to under stand Riemann-Stieltjes Integrals to do this problem. It is a concept in analysis.
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andyxm

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#22 andyxm
Member since 2006 • 6194 Posts
I thought Poisson was french for fish...:|
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Brutal_Elitegs

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#23 Brutal_Elitegs
Member since 2004 • 16426 Posts
I hate probability questions. After studying tirelessly for months to understand that ****, I'd be glad to never answer a binomial/poisson/normal/uniform/exponential distribution question ever again.
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RobotOpBuddy

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#24 RobotOpBuddy  Moderator
Member since 2004 • 65506 Posts
A lvl statistics..?...lol, it would be the one section of maths that i disliked wouldn't it...never liked the approximations etc. i think i'll stick to calculus&mechanics...lol
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194197844077667059316682358889

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#25 194197844077667059316682358889
Member since 2003 • 49173 Posts

[QUOTE="xaos"]That's not math, that's probability/statistics :(MrGrime

 

I think probability/statistics is considered math...

I am so pleased that Googling "statistics is not math" brought this up as the first hit :) I even found a statistics syllabus that made this same assertion *g*
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Jumbo120788

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#26 Jumbo120788
Member since 2004 • 14956 Posts
1+4x*3=4x+7-44
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85070537783

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#27 85070537783
Member since 2005 • 1219 Posts
You people are just begging for me to get my hands dirty, but no!!! my native language is spanish I know my share of probabilistics but as longs as I have no idea what is saying I know the Poisson distribution but I have no clue what mean, means or what is the meaning in distribution in spanish I could look, but no!!! this time you people are on your own.
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2fast4urmom

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#28 2fast4urmom
Member since 2006 • 339 Posts

You people are just begging for me to get my hands dirty, but no!!! my native language is spanish I know my share of probabilistics but as longs as I have no idea what is saying I know the Poisson distribution but I have no clue what mean, means or what is the meaning in distribution in spanish I could look, but no!!! this time you people are on your own.85070537783

"whatever" (as your signature so appropriately states)

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alex1889

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#29 alex1889
Member since 2006 • 1633 Posts
seems more like finding a rule or something, ah wel i dont know the answer, but is it 42?
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laineter

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#30 laineter
Member since 2006 • 815 Posts
Well me to I refuse to do math unless it is related with my money and my everyday life. :D
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BEAN_LARD_MULCH

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#31 BEAN_LARD_MULCH
Member since 2006 • 4720 Posts
What grade math is that...