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 #6
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https://web2.0calc.com/img/upload/9dc0601484f88e63c19f0354/ugh3.jpg

 

Pretend that we just got all the people that liked the movie in a room together. The question is what is the probability that a randomly selected person in that room is aged 18-34 ?

 

probability  =  number of people aged 18-34 in the room / number of people in the room

 

probability  =  num of people aged 18-34 that liked the movie / num of people that liked the movie

 

probability  =  12 / (12 + 5 + 9)

 

probability  =  12 / 26

 

probability  ≈  0.46

hectictar Oct 23, 2018
 #7
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hectictar Oct 14, 2018