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a.) a group of people were asked if they had run a red light in the last year. 431 responded yes and 267 no. Find

a.) a group of people were asked if they had run a red light in the last year. 431 responded yes and 267 no. Find the probability that if a person is chosen at random, they have a run a red light.

b.) On a 9 question multiple-choice test, where each question has 5 answers, what would be the probability of getting at least one question wrong?

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