Statistics: Testing Hypothesis with the Z-statistic – #29519


Question: Do car crashes occur on different days with the same frequency? A sample of motor vehicle deaths for a recent year in Montana is randomly selected. The numbers of fatalities for the different days of the week are listed in the table that follows. At the 0.05 significance level, test the claim that accidents occur with equal frequency on different days.

Day Sun Mon Tues Wed Thurs Fri Sat

# of fatalities

31 20 20 22 22 29 36

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