Question

Research Scenario 4

An organization has recently restructured and, in the process, has created a new department. Since the transition, members of the new department have had difficulty working with one another and departmental performance is low. An I/O consultant has been hired to implement an intervention to decrease interpersonal conflict among employees. To help diagnose the issue, he emails a survey to the 36 department members asking them to rate conflict levels on a scale from 1 (no conflict) to 10 (extremely high conflict). All 36 employees respond and the mean conflict level is 8.9. Next, he implements a 4-week conflict reduction intervention. Two weeks after the intervention is complete, he emails another survey to all 36 employees asking them to current conflict levels. All 36 employees respond and the mean cohesion level is now 4.6.   

• 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?

Answer 1

1.Null hypothesis is H0= True mean difference is equal to Zero.

Alternate Hypothesis is H1= True mean difference is not equal to Zero.

2. The Paired sample t test is appropriate for this analysis. This test determine whether the mean difference between two sets of observations is zero. Here each subject is measured twice, resulting in pairs of observations. Common applications of the paired sample t-test include case-control studies or repeated-measures designs.

3. Variables included in the study:

• Independent Variable

Participating department employees are independent of one another.

• Dependent Variable

4. Conflict Level is dependent variable as it is vary with the factors affecting the conflict.

5. Levels of Measurements are Conflict level is numeric and Employees are quantitative variables.