• F.9 The number of cars arriving at Patti Miles’s Car Wash, in Orono, Maine, during the last 200 hours of operation is observed to be the following:

a) Set up a probability and cumulative-probability distribution for the variable of car arrivals.

b) Establish random-number intervals for the variable.

c) Simulate 15 hours of car arrivals and compute the average number of arrivals per hour. Select the random numbers needed from column 1, Table F.4, beginning with the digits 52.

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NUMBER OF CARS ARRIVING 3 or fewer 45 FREQUENCY 0 20 30 50 60 6 7 8 9 or more 40 0 200