
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 17th, 2013, 12:39 PM  #1 
Newbie Joined: Nov 2013 Posts: 8 Thanks: 0  Expectation of (aXbY) ?
Hello, I 'm trying to express the following in integral form: E[a/Xb/Y], where E[.] stands for the expectation operator. Let a,b be some nonnegative constants and X,Y are independent nonnegative Gamma distributed random variables. Any help would be useful. Thanks in advance 
December 17th, 2013, 12:56 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,558 Thanks: 602  Re: Expectation of (aXbY) ?
Saw your post in Physics Forums. Comment applies here.

December 17th, 2013, 01:01 PM  #3 
Newbie Joined: Nov 2013 Posts: 8 Thanks: 0  Re: Expectation of (aXbY) ?
i 'm interested in evaluating the second on (i.e., a/X  b/Y). Can you be more specific ? the addition formula with what integration bounds exactly? what if i would use the expectation of X and Y seperately (i.e, E[c/X]E[b/Y])? 
December 18th, 2013, 01:07 PM  #4 
Global Moderator Joined: May 2007 Posts: 6,558 Thanks: 602  Re: Expectation of (aXbY) ?
Answered (by me) in Physics Forum.


Tags 
axby, expectation 
Search tags for this page 
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Expectation E(X) Question  eulerrules1  Advanced Statistics  6  December 9th, 2011 09:04 PM 
Expectation and Variance  thekiterunner  Advanced Statistics  3  August 10th, 2011 12:16 PM 
existence of expectation  guroten  Advanced Statistics  1  April 13th, 2011 04:05 PM 
What is the expectation of this RV?  STV  Advanced Statistics  9  July 14th, 2008 11:45 AM 
combinatorics and expectation  samouille666  Algebra  2  December 31st, 1969 04:00 PM 