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Back to 15.3 Problems on Random Selection

15.3 Exercise 20

Avg difficulty 2.5

One car in 5 in a certain community is a Volvo. If the number of cars passing a traffic check point in an hour is Poisson (130), what is the expected number of Volvos? What is the probability of at least 30 Volvos? What is the probability the number of Volvos is between 16 and 40 (inclusive)?

Pfeiffer, Applied Probability, 15.3 Problems on Random Selection, exercise 20

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Adapted from Applied Probability © 2009 Paul E. Pfeiffer. Licensed under CC BY 3.0. Source: Applied Probability. Imported at revision d7a0420.