✅ Перевірена відповідь на це питання доступна нижче. Наші рішення, перевірені спільнотою, допомагають краще зрозуміти матеріал.
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?