A professor has learned that three students in his class of 20 will cheat on the final exam. He decides to focus his attention on four randomly chosen students during the exam. What is the probability that he finds at least one of the students cheating?
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- Probability of no students cheating = (1 - 3/20)^4 - Probability of no students cheating = (17/20)^4 - Probability of no students cheating ≈ 0.478 ** Show more…
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