Statistics: Z-test: Testing hypotheses – #29424


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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