A sample of adults and teenagers were asked about the type of movies they like best. The collected data is grouped in the below table: Comedy Action Science Fiction Total Teenagers 40 60 50 150 Adults 30 80 60 170 Total 70 140 110 320 A. If a person is selected at random, what is the probability that he is a teenager?

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Teenagem Adults Total Comedy Action Science fiction 40 30 70 ... View the full answer