Multivariate Hypergeometric Distribution

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Homework Help Overview

The discussion revolves around a problem related to the multivariate hypergeometric distribution, specifically focusing on two parts of a question. The original poster expresses uncertainty about part B after feeling confident about part A, seeking guidance on their approach.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the original poster's attempts and express a desire for clarification on the criteria for part B. There are mentions of specific cases that may have been overlooked and the need for clearer presentation of the problem.

Discussion Status

Some participants have provided feedback on the original poster's attempts, noting potential oversights and suggesting areas for further consideration. There is an acknowledgment of the original poster's eventual realization regarding their earlier confusion, but no explicit consensus has been reached on the best approach to the problem.

Contextual Notes

Participants highlight the importance of adhering to specific criteria in the problem, such as ensuring representation from certain categories and the total count of selections. There are also comments about the readability of the original post's format, indicating potential barriers to effective communication.

rogo0034
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Homework Statement


CQeI0.png


I worked out A) just fine it seems (given the answer in the book), but B) I'm not sure how to take this out. Below was a try but I'm not sure i was even on the right track. Any ideas?

Homework Equations


x5s6D.png



The Attempt at a Solution


0oC3c.jpg
 
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Anyone have any ideas here?
 
really, with over 400 views? no know can tackle this? Even Reddit at least took a shot at it. come on boys! lol, anything to get me started thinking right about this would help!
 
rogo0034 said:
Anyone have any ideas here?

In (b) you seem to have forgotten the cases (2,2,0,0), (0,2,0,2) and (2,0,0 2). Otherwise the basics are OK (but please in future try to attach more readable files: yours is incomprehensible on my laptop and on my i-phone; it shows up only on my desktop machine.)

RGV
 
Last edited:
"All nationalities but Italian are represented" So those three do not comply. It must have a zero for the third space, and contain at least one from each of the others, and must equal 4.
 
Last edited:
ok, I answered my own question. the last two i added in would not work due to the criteria. so i guess you helped, thanks RGV. I'll try and find a better format to post these in.
 
rogo0034 said:
ok, I answered my own question. the last two i added in would not work due to the criteria. so i guess you helped, thanks RGV. I'll try and find a better format to post these in.

Sorry, I mis-read question (b). Your original solution is correct, and did not leave anything out (as I had erroneously suggested).

RGV
 
Thanks for looking at it regardless! This site has helped me so much, I appreciate anyone's input!
 

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