anonymous
  • anonymous
I need this one answer. The Venn Diagram shows the number of bike and skate club members who bike (circle on the left) or skate (circle on the right). Compute P (S | B) and write your answer as a decimal. P (S | B) = a0 ways.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
https://dalton.owschools.com/media/o_anageo_ccss_2014/10/geo_10b_19_13_venn.gif
misty1212
  • misty1212
HI!!
misty1212
  • misty1212
make a fraction in the top, put then number of things in the intersection in the bottom, but the number of things iB

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More answers

anonymous
  • anonymous
I got 6 as my answer is that right?
misty1212
  • misty1212
heck no!!
misty1212
  • misty1212
lets go slow
misty1212
  • misty1212
first, you are asked for a probability the answer must be a number between 0 and 1, it cannot be 6
misty1212
  • misty1212
i actually don't see a 6 anywhere in the diagram but no matter what is the number in the intersection of that diagram (the number in both circles)?
anonymous
  • anonymous
0.17 or 0.16?
anonymous
  • anonymous
yeah lets take it slow then lol
misty1212
  • misty1212
what is the number in the intersection?
misty1212
  • misty1212
|dw:1435064802651:dw|
anonymous
  • anonymous
5
misty1212
  • misty1212
right there are 5 things in \(B\cap S\) meaning i guess 5 people both bike and skate that will be the numerator of the fraction (the top)
misty1212
  • misty1212
now what is the total number in B (the total, not just the 20)?
misty1212
  • misty1212
really? what two numbers do you see in B?
misty1212
  • misty1212
B = Bike on the left
anonymous
  • anonymous
oh 20 is what i see
misty1212
  • misty1212
yes, but that is not ALL that is in B
anonymous
  • anonymous
and 5 as well?
misty1212
  • misty1212
the 20 is outside of the intersection you have to include the intersection as well
misty1212
  • misty1212
right for a total of ?
anonymous
  • anonymous
25
misty1212
  • misty1212
right
misty1212
  • misty1212
now we can compute the answer
anonymous
  • anonymous
alright how so
misty1212
  • misty1212
\[P(S|B)\]means the probability that you skate GIVEN that you bike there are 25 people who bike of those 5 also skate
misty1212
  • misty1212
make a fraction, put the 5 in the numerator and the 25 in the denominator
anonymous
  • anonymous
i got 0.2
misty1212
  • misty1212
ok that looks good since \[\frac{5}{25}=\frac{1}{5}=0.2\]
anonymous
  • anonymous
alright so 0.2 is the answer then correct?
misty1212
  • misty1212
i have a feeling you did not really understand what was going on go back and look at what we did, convince yourself that a) it makes sense and b) it is not that hard yeah 0.2
anonymous
  • anonymous
Thank you and sorry im not very good with this problems lol
misty1212
  • misty1212
no need to apologize, it is not like you are born knowing it, but it is understandable

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