A recent study of accident records at a large engineering company reported the following number of injuries in each shift for one year: Morning, 879; Afternoon, 1,067; Night, 1,200. Is there sufficient evidence to say that the number of accidents during the three shifts are not the same? Test at the α = 0.05, α = 0.01, and α = 0.001 levels.
a. |
There is sufficient evidence at both 0.05 and 0.01 levels but not at the 0.001 level. |
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b. |
There is sufficient evidence at all three levels to say that the
number of accidents |
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c. |
There is sufficient evidence at the 0.05 level but not at the 0.01 and 0.001 levels. |
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d. |
There is sufficient evidence at the 0.001 level but not at the 0.05 and 0.01 levels. |
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