TABLE 12-10
One criterion used to evaluate employees in the assembly section of a large factory is the number of defective pieces per 1,000 parts produced. The quality control department wants to find out whether there is a relationship between years of experience and defect rate. Since the job is repetitious, after the initial training period any improvement due to a learning effect might be offset by a loss of motivation. A defect rate is calculated for each worker in a yearly evaluation. The results for 100 workers are given in the table below.
-Referring to Table 12-10, find the rejection region necessary for testing at the 0.05 level of significance whether there is a relationship between defect rate and years of experience.
Definitions:
ISO 9000 Certified
A designation indicating that an organization complies with the standards of quality management and assurance specified by the International Organization for Standardization.
Typing Skills
The ability to input text into a computer or typewriter quickly and accurately, often measured in words per minute.
Full Coverage
Refers to insurance policies or warranties that offer comprehensive protection against a wide range of potential damages or losses.
Expected Wealth
The anticipated amount of money or assets that an individual or entity forecasts to accumulate over a period.
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