Fifteen cities, of roughly equal size, are chosen for a
Chapter , Problem 13(choose chapter or problem)
Fifteen cities, of roughly equal size, are chosen for a traffic safety study. Eight of them are randomly chosen, and in these cities a series of newspaper articles dealing with traffic safety is run over a 1-month period. The number of traffic accidents reported in the month following this campaign is as follows: Treatment group 19 31 39 45 47 66 74 81 Control group 28 36 44 49 52 52 60 Determine the exact p-value when testing the hypothesis that the articles have not had any effect.
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