Does the job satisfaction of assembly-line workers differ when their work is machine-paced rather than self-paced? To try to answer that question, a study chose 18 subjects at random from a company that assembles electronic devices. Half of the workers were assigned at random to each of the two groups. Both groups did similar assembly work, but one group was allowed to pace themselves while the other group used an assembly line that moved at a fixed pace. After two weeks, all the workers took a test of job satisfaction. Then they switched work setups and took the test again after two weeks. The response variable is
Does the job satisfaction of assembly-line workers differ when their work is machine-paced rather than self-paced? To try to answer that question, a study chose 18 subjects at random from a company that assembles electronic devices. Half of the workers were assigned at random to each of the two groups. Both groups did similar assembly work, but one group was allowed to pace themselves while the other group used an assembly line that moved at a fixed pace. After two weeks, all the workers took a test of job satisfaction. Then they switched work setups and took the test again after two weeks. The response variable is the difference in job satisfaction scores: self-paced minus machine paced.
a. Determine the null hypothesis.
b. Determine the alternative hypothesis.
c. Classify the hypothesis test as two-tailed, left-tailed or right-tailed.
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