TABLE 11-4. One criterion used to evaluate employees in theassembly section of a

Question

TABLE 11-4. One criterion used to evaluate employees in theassembly section of a large factory is the number of defectivepieces per 1,000 parts produced. The quality control departmentwants to find out whether there is a relationship between years ofexperience and defect rate. Since the job is repetitious, after theinitial training period any improvement due to a learning effectmight be offset by a loss of motivation. A defect rate iscalculated for each worker in a yearly evaluation. The results for100 workers are given in the table below.
Referring to Table 11-4, a test was conducted to determine ifa relationship exists between defect rate and years of experience.Which of the following p values would indicate that defect rate andyears of experience are dependent? Assume you are testing at alpha= 0.05. a. 0.045 b. 0.055 c. 0.074 d. 0.080

Explanation / Answer

The test statistics = (O-E)2 /E

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