Machine

Shift A B C D

1 41 20 12 16

2 31 11 9 14

3 15 17 16 10

A. The number of breakdowns is dependent on the shift, because the test value 11.649 is less than the critical value of 12.592.

B. The claim that the number of breakdowns is independent of the shift cannot be rejected, because the test value 11.649 is less than the critical value of 12.592.

C. The number of breakdowns is dependent on the shift, because the p-value is .07.

D. The number of breakdowns is independent of the shift, because the test value 12.592 is greater than the critical value of 11.649.

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