Are Tom and Victoria's Locations in Canada Related?

  • Thread starter Thread starter muktl
  • Start date Start date
  • Tags Tags
    Confused
AI Thread Summary
Tom and Victoria are two children living in Canada, specifically in Toronto and Vancouver, respectively. When considering them as any two children in Canada, the events of Tom living in Toronto and Victoria living in Vancouver are independent. However, if Tom and Victoria are siblings living in the same house, the events are mutually exclusive, as they cannot both reside in different cities simultaneously. The discussion emphasizes understanding the definitions of independent and mutually exclusive events in probability. Clarifying these concepts is essential for accurately answering related test questions.
muktl
Messages
6
Reaction score
0
Tom and Victoria are two children who live in Canada. Consider the following de ned events
about two Canadian cities far from each other: Toronto and Vancouver.
 Let T represent the event that Tom lives in Toronto.
 Let V represent the event that Victoria lives in Vancouver.
1. If Tom and Victoria are any two children in Canada, the events T and V are (check all
that are true):
A) Independent
B) Mutually Exclusive
C) Neither


2. If Tom and Victoria are siblings who live in the same house, the events T and V are
(check all that are true):
A) Independent
B) Mutually Exclusive
C) Neither

if you can put it into a good explanation that would help a lot, thanks.
 
Physics news on Phys.org
What do you think the answers are?

Independent means: if you know that T is true, then this still gives you no information about whether V is true
For example: if T is "It rains today" and if V is "a child will be born today". If you know that T is true, that gives you no information about V at all.

mutually exclusive means: if you know T is true, then V can not be true.
For example: if T is "it rains today" and V is "it will be sunny all day".
 
micromass said:
What do you think the answers are?

Independent means: if you know that T is true, then this still gives you no information about whether V is true
For example: if T is "It rains today" and if V is "a child will be born today". If you know that T is true, that gives you no information about V at all.

mutually exclusive means: if you know T is true, then V can not be true.
For example: if T is "it rains today" and V is "it will be sunny all day".


I will pick Independant for the first one, then 2nd question i will pick mutually exclusive?
 
Yes, that is correct!
 
micromass said:
Yes, that is correct!

sweet, thanks. just to make sure i get the right idea so i won't fail the test lol
 
I was reading documentation about the soundness and completeness of logic formal systems. Consider the following $$\vdash_S \phi$$ where ##S## is the proof-system making part the formal system and ##\phi## is a wff (well formed formula) of the formal language. Note the blank on left of the turnstile symbol ##\vdash_S##, as far as I can tell it actually represents the empty set. So what does it mean ? I guess it actually means ##\phi## is a theorem of the formal system, i.e. there is a...
Back
Top