[A, SfS] Chapter 7: Chi-square tests and ANOVA: 7.2: Chi-square Test of Independence
Chi-square Test of Independence
At an assembly plant for light trucks, routine monitoring of the quality of welds yields the following data:
Can we conclude that the quality varies among shifts? Compute the P-value of the appropriate hypothesis test. Use #3# decimal places in your answer.
| Number of Welds | |||
| High Quality | Moderate Quality | Low Quality | |
| Day Shift | #467# | #191# | #42# |
| Evening Shift | #445# | #171# | #34# |
| Night Shift | #254# | #129# | #17# |
Can we conclude that the quality varies among shifts? Compute the P-value of the appropriate hypothesis test. Use #3# decimal places in your answer.
| #P=# | (#3# decimals) |
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