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Data from 14 cities were combined for a​ 20-year period, and the total 280 ​city-years included...

Data from 14 cities were combined for a​ 20-year period, and the total 280 ​city-years included a total of 168 homicides. After finding the mean number of homicides per​ city-year, find the probability that a randomly selected​ city-year has the following numbers of​ homicides, then compare the actual results to those expected by using the Poisson​ probabilities: Homicides each​ city-year a. 0 b. 1 c. 2 d. 3 e. 4 Actual results 155 90 28 6 1 a. ​P(0)equals nothing

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