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In: Statistics and Probability

Research Scenario 3 A training designer is interested in identifying which training technique is most effective...

Research Scenario 3

A training designer is interested in identifying which training technique is most effective in delivering a course on communication skills. This researcher invites 90 employees to participate in a training course, and then randomly assigns them to one of three groups—classroom lecture (n=30), programmed instruction (n=30), and blended learning (n=30). Participants in each group are trained on exactly the same information pertaining to communication skills using one of the three different delivery techniques outlined above. After the training session, employees are asked to perform in a role play activity to demonstrate their newly learned communication skills. An independent researcher (blind to training group) provides a rating of communication skills (i.e., poor "1" to excellent "5") for each participant. The mean communication skills ratings for each group are classroom lecture (M=3.0), programmed instruction (M=2.9), blended learning (M=3.8).  

  • Provide the appropriate null and alternative hypotheses.
  • Determine which type of analysis would be appropriate to answer this research question. Be specific. Please support your answer using course materials.
  • Identify the variables included in this study. Label variables as dependent and independent, if applicable.
  • What are the levels of measurement for each variable?
  • What are the degrees of freedom associated with the test statistic?

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orchestra answered 2 years ago
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