TABLE 11-4. One criterion used to evaluate employees in theassembly section of a
ID: 2950372 • Letter: T
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, what is the expected number ofemployees with 1 to 4 years of training time and a high defectrate? a. 12.00 b. 8.64 c. 6.67 d. 6.00
Explanation / Answer
Total number = 6+9+9+9+19+.......+10 = 100
Total defect rate corresponding to hig h = 6+9+9 =24
Total 1-4 years column total = 9+19+8 = 36
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