NHTSA has estimated that the average 18-30 y.o driver with a car accident has a 6.5% probability of having at least one police-reported car accident last year. If we study medical interns on a typical hospital overnight schedule, then among 20 interns, 5 report having a car accident last year. The interns have the same risk of having a car accident as a typical 18-30 person. What is a good probability model for the number of interns with at least one car accident last year?

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A good probability model for the number of interns with at least one car accident last year is the binomial pdf, with n=20 and p= .065 (same as a typical 18-30 person)

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