It is believed that the number of drivers who are ticketed in an hour for speeding on a particular stretch of highway is a Poisson distribution with a mean of 3.0 per hour. A random sample of 100 hours is selected with the following results: These data are included in the Final Exam Excel Files under the tabTicketsFrequency051922031842051564768192 Solution For testing whether it is a Poisson find mean and std dev. As mean and variance are considerably difference this data does not fit a Poisson modelTicketsFrequencytickets*freqtickets^2*freq0500199812204080031854972420801600515 7511256424967642252818892918Total1003414952Mean3.41Variance37.8919.