anonymous
  • anonymous
Help with probability?
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@uri @perl @ganeshie8
anonymous
  • anonymous
I will help :) What's the problem
anonymous
  • anonymous
Choose a row and column and compare P(A | B) with P(B | A). Explain what each probability means in the context of the situation and data you collected.:

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

undeadknight26
  • undeadknight26
Alright do you know how to find the probability of this? Or is that what you need help with?
anonymous
  • anonymous
I'm just kinda lost on what column to choose.
anonymous
  • anonymous
And where to go from there.
undeadknight26
  • undeadknight26
Choose any one
anonymous
  • anonymous
Okay, how about Nikon professional photographers to Canon professional photographers?
anonymous
  • anonymous
@undeadknight26
undeadknight26
  • undeadknight26
One second please :)
anonymous
  • anonymous
Okay, sorry!
undeadknight26
  • undeadknight26
It's fine m8 :)
undeadknight26
  • undeadknight26
I'm just refreshing my memory on probability lol
undeadknight26
  • undeadknight26
Well you chose the Professional column right?
anonymous
  • anonymous
Yes!
undeadknight26
  • undeadknight26
This question is busting my brain ._. @acxbox22 @surjithayer @sleepyjess @dan815 @geny55 @gabylovesu @campbell_st @Nurali @robtobey
undeadknight26
  • undeadknight26
Sorry mate I thought I could do it but I forgot everything about probability :/
perl
  • perl
Would you like help with this?
anonymous
  • anonymous
Yes please!
perl
  • perl
you want to compare P(A|B) and P(B|A) First lets define A and B
anonymous
  • anonymous
Okay, how?
perl
  • perl
Let A = professional B = Nikon brand Once you define A and B, then it forces the complements to be: A' = non professional B' = the other brand Canon
anonymous
  • anonymous
Okay got it. So how would I label that with P(A | B) and P(B | A)?
perl
  • perl
P(A|B) means the probability of event A given that you know event B has already occured. On the table this means we only look at event B's row or column
anonymous
  • anonymous
Okay, so P(8|12)?
perl
  • perl
P( A|B) = P( professional | Nikon brand )
anonymous
  • anonymous
Oh so I don't need to put any numbers in?
perl
  • perl
The given part means that we only look in the row 'Nikon'
anonymous
  • anonymous
Oh okay! So P(Profesional | Nikon) and P(Nikon | Profesional)?
anonymous
  • anonymous
Professional*
perl
  • perl
P( A|B) = P( professional | Nikon brand ) we look only in the Nikon row. http://prntscr.com/7kwtse therefore P(A|B) = 8/10
perl
  • perl
the `|` symbol means 'given' .
anonymous
  • anonymous
OHH I understand!
anonymous
  • anonymous
And then vise versa for P(B | A)?
perl
  • perl
yes
anonymous
  • anonymous
Okay, what about P(A∩B) with P(A∪B)?
perl
  • perl
P( B|A) = P( Nikon brand | Professional ) http://prntscr.com/7kwury 8/12
anonymous
  • anonymous
Got it! What about my question above?
perl
  • perl
Okay, what about P(A∩B) = 8/20 P(A∪B) = (8 + 2 + 4) / 20
anonymous
  • anonymous
That's it?
perl
  • perl
little more detail here
perl
  • perl
P(A∩B) : probability of professional `and` Nikon http://prntscr.com/7kwx9w = 8/20 P(A∪B) : probiablity of professional `or` Nikon http://prntscr.com/7kwxo7 = (8 + 2 + 4) / 20
perl
  • perl
You can think think of it in terms of intersection of row and column P(A∩B) http://prntscr.com/7kx0gv
anonymous
  • anonymous
Ohh okay! So I said... Compare P(A∩B) with P(A∪B), and explain what each probability means in the context of the situation and data you collected.: P(A∩B) = 8/20 (probability of professional and Nikon). Here, were only looking at the eight professional Nikon photographers. P(A∪B) = (8 + 2 + 4) / 20 (probability of professional or Nikon). Here, we’re using data from the professional column of Canon and Nikon plus Nikon’s two non-professionals.
perl
  • perl
Looks good :)
anonymous
  • anonymous
Okay great! Thank you so much! Only three more homework assignments till I graduate!
perl
  • perl
A∩B is also called `A intersect B` or `A & B ` A∪B is called `A union B` or `A or B `
perl
  • perl
Good luck :)
anonymous
  • anonymous
Alright, it's in my notes now. Thank you!

Looking for something else?

Not the answer you are looking for? Search for more explanations.