Chi-square test and number of breakdowns

Reference no: EM13107935

A company operates four machines during three shifts each day. From production records, the data in the table below were collected. At the .05 level of significance test to determine if the number of breakdowns is independent of the shift.

Machine

Shift A B C D

1 41 20 12 16

2 31 11 9 14

3 15 17 16 10

Reference no: EM13107935

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