@jim_thompson5910
how would it be with this type of diagram?
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OpenStudy (daniellelovee):
OpenStudy (daniellelovee):
P(the school has red as an official color given they have blue as an official color) =
P(the school has blue as an official color given they have red as an official color) =
OpenStudy (daniellelovee):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
let's focus on `P(the school has red as an official color given they have blue as an official color) `
jimthompson5910 (jim_thompson5910):
the key phrase is ` given they have blue as an official color`
so focus on just the blue circle only. What numbers are in this circle?
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OpenStudy (daniellelovee):
10
4
2
8
jimthompson5910 (jim_thompson5910):
so in total, there are 10+4+2+8 = 24 schools in the blue circle
jimthompson5910 (jim_thompson5910):
how many have both red and blue?
OpenStudy (daniellelovee):
4 and 2?
jimthompson5910 (jim_thompson5910):
yes so 6
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jimthompson5910 (jim_thompson5910):
P(the school has red as an official color given they have blue as an official color)
would be equal to
(# of red and blue)/(# of blue total) = 6/24 = 1/4
OpenStudy (daniellelovee):
alright im going to try and do the second one can you check if its right?
jimthompson5910 (jim_thompson5910):
sure
OpenStudy (daniellelovee):
6/28?
jimthompson5910 (jim_thompson5910):
be sure to reduce as much as possible
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