TABLE 11-10 One Criterion Used to Evaluate Employees in the Assembly Section

question 11

Multiple Choice

TABLE 11-10
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 11-10, a test was conducted to determine if a relationship exists between defect rate and years of experience. Which of the following p-values would indicate that defect rate and years of experience are dependent? Assume you are testing at α = 0.05.

• A) 0.045
• B) 0.055
• C) 0.074
• D) 0.080

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Definitions:

Proportions

The relationship between parts and a whole in terms of size, quantity, or degree.

Factor 2

A component or element that contributes to a particular result or situation.

Profit

The financial gain obtained when the amount earned from a business activity exceeds the expenses, costs, and taxes needed to sustain the activity.

Marginal Product

Marginal product is the additional output resulting from the use of one more unit of a variable input, holding other inputs constant.