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am i supposed to just divide the two?

http://prntscr.com/ndzd6m

 Apr 19, 2019
 #1
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+1

 

 

 

P(A and B) = P(AB) =P(A)*P(B)

So 

P(B)=P(A and B) / P(A)

P(not B)=1-P(B)

 Apr 19, 2019

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