Can E1 and E2 be both independent and mutually exclusive events?

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    Probability
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Discussion Overview

The discussion revolves around the concepts of independent events and mutually exclusive events in probability theory, using the example of rolling a die. Participants explore the definitions and relationships between these types of events, as well as calculations related to specific events defined in the context of the die roll.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Mathematical reasoning

Main Points Raised

  • One participant asks for an example to differentiate independent events from mutually exclusive events, using the events E1 (getting a multiple of 3) and E2 (getting a multiple of 2) from rolling a die.
  • Another participant suggests calculating the probabilities of E1, E2, and their intersection to determine their relationship, noting that E1 and E2 are not mutually exclusive.
  • A participant calculates the probabilities: P(E1) = 1/3, P(E2) = 1/2, and P(E1∩E2) = 1/6, concluding that this indicates they are not mutually exclusive but does not clarify their independence.
  • Several participants inquire about the conditions for events to be independent, seeking clarification on the definitions.
  • One participant suggests that definitions should be looked up, implying that the discussion may benefit from a clearer understanding of the terms involved.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the relationship between independence and mutual exclusivity, with no consensus reached on the definitions or conditions for independent events.

Contextual Notes

Participants have not fully resolved the mathematical steps or definitions related to independent and mutually exclusive events, leading to ongoing questions and discussions.

parshyaa
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Can you give a example to differentiate independent events from mutually exclusive events?

Suppose there is a random experiment of rolling a die:

E1 is a event of getting a multiple of 3
E1={3,6}
E2 is a event of getting a multiple of 2
E2={2,4,6}
Is E1&E2 are independent events, here they are not mutually exclusive.
 
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parshyaa said:
Is E1&E2 are independent events, here they are not mutually exclusive.
Calculate the probability of E1, E2 and "E1 and E2" and check it yourself?

Finding two mutually exclusive events should be easy.
 
mfb said:
Calculate the probability of E1, E2 and "E1 and E2" and check it yourself?

Finding two mutually exclusive events should be easy.
P(E1)=1/3, P(E2)= 1/2
P(E1∩E2) = 1/6
This only tells me that they are not mutually exclusive
This does not tell me any thing about independent event
 
What is the condition for independent events?
 
mfb said:
What is the condition for independent events?
That is what i am asking?
 
Definitions are something you should look up.
 

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