SCENARIO 12-10
One Criterion Used to Evaluate Employees in the Assembly

question 19

Multiple Choice

SCENARIO 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 Scenario 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.

• A)Reject H₀ if \(\chi\) ² > 16.919
• B)Reject H₀ if \(\chi\)² > 15.507
• C)Reject H₀ if \(\chi\)² > 11.143
• D)Reject H₀ if \(\chi\)² > 9.488

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Definitions:

Subjects

Individuals or entities that participate in a research study.

4 × 3 Factorial ANOVA

A type of factorial ANOVA test with two independent variables, one at 4 levels and the other at 3 levels, to examine their effects on a dependent variable.

Possible Group Assignments

The various ways in which participants can be allocated to different groups or conditions in an experiment.

Subjects

Individuals or entities that are studied or observed in a research experiment or survey to collect data about them.