An Industrial Engineer Wants to Test the Effect of Three

question 24

Multiple Choice

An industrial engineer wants to test the effect of three different ways of assembling a part on the total assembly time.Five people are randomly assigned to each of the three assembly methods,and the total assembly time (in seconds) is recorded.Calculate
,
And the F-ratio.Can you reject
Using α = 0.05? The ANOVA table is listed below.

• A) = 492767.954; =19774.591;F-Ratio = 24.919;Yes,reject Using α = 0.05.
• B) = 492767.954; =23070.356;F-Ratio = 21.359;Yes,reject Using α = 0.05.
• C) = 328511.969; =23070.356;F-Ratio =14.240;Yes,reject Using α = 0.05.
• D) = 328511.969; =19774.591;F-Ratio =16.613;Yes,reject Using α = 0.05.
• E) = 492767.954; =21295.713;F-Ratio = 23.139;Yes,reject Using α = 0.05.

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Definitions:

Internal Validity

The extent to which a study can demonstrate that a causal relationship exists between variables, free from external influences.

Construct Validity

The extent to which a test measures what it claims to be measuring, in the context of psychological testing and research.

Mundane Realism

Refers to whether the setting of an experiment physically resembles the real world.

Reactance

An unpleasant emotional response that people often experience when someone is trying to restrict their freedom.