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Lebo claims that workers in large companies are less work motivated than workers in small companies. In a previous study involving all large companies in South Africa, it was found that the average workers’ motivation score on a work motivation questionnaire (where a higher score indicates a higher level of work motivation) was 50 with a standard deviation of 15. Lebo plans to present the same questionnaire to a sample of workers from small companies to determine whether her suspicion is true.
Which of the sets of
statistical hypotheses below reflect the research hypothesis to be tested?