Adults and high school students were asked four trivia questions. The number of

Question

Adults and high school students were asked four trivia questions. The number of correct answers given by each participant was recorded. To the right is a table showing the results. Complete parts a) through d). a) What is the probability that a randomly selected participate is a student? (Round four decimal places as needed.) b) What is he probability that a randomly selected participant had fewer than 2 correct answers? (Round to four decimal places as needed.) c) What is the probability that a randomly selected participant is an adult or had no correct answers? (Round four decimal places as needed) d) What is the probability that a randomly selected participant is an adult or had no correct answers? (Round to four decimal places as needed.)

Explanation / Answer

Q a) P( randomly selected participant is a student ) = 157/306

b) P( randomly selected participant had ferwer than 2 correct answers) = (59+44)/306 = 103/306

c) P(randomly selected participant is adult and had no correct answer) = 8/306

d)  P(randomly selected participant is adult and had all four correct answers ) = 32/306

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