Probability and Events (I don't quite understan the answer)

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Homework Help Overview

The problem involves a scenario where a child named Urška randomly selects two pieces of paper from a bag containing the names of her classmates. Participants are tasked with matching statements about the events to their corresponding definitions in the context of probability.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to understand why the event of selecting a paper with the name David is classified as a compound event rather than an elementary event. Some participants explore the distinction between different events involved in the selection process.

Discussion Status

The discussion is ongoing, with participants engaging in clarifying the definitions of elementary and compound events. There is an indication that some understanding is developing, as one participant expresses a potential realization about the reasoning behind the classification of events.

Contextual Notes

Participants are navigating the definitions of events in probability without explicit equations or formulas, focusing instead on the logical relationships between the events described in the problem.

Matejxx1
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Homework Statement


An only child Urška puts 3 pieces of paper into a bag : on each piece of paper is written a name of one of her classmates :David,Niko,Dejan (those are the 3 names): She then randomly picks 2 pieces of paper from the bag and checks them
Match the statements on the right with the ones on the left
We have to mach the letters with the numbers

Homework Equations


none

The Attempt at a Solution


A: on one of the chosen papers is the name David
B:On one of the papers is written the name of Urška's brother
C:she pick 2 pieces of paper
D:3
E: on none of the chosen pieces of paper is the name Dejan

1:elementary event
2:experiment
3:impossible event
4:Compound event
5: numbers of possible result

and so I got
A4
B3
C2
D5
E1
What I don't understand is why is A (on one of the chosen papers is the name David ) a compound event
why can't it be an elementary event
 
Last edited:
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Think about picking out the first piece of paper and picking out the second. Are they different events?
 
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Well yes since the name on the first piece must be different from the second one, however I still don't quite get the answer.
 
Ah I think I got it mind telling me if this way of thinking is correct
if we pick the piece of paper with the name David, we must also check the 2nd piece to figure out if it is Niko or Dejan
However if we look E(on none of the chosen pieces of paper is the name Dejan) because we know which name was not picked up we know which two were.
 

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