The Test has as its focus the "Big Question": Did the DSC Treatment "Work"?

The focal question, Did the DSC Treatment "Work"? This design allows us to answer this question from a number of perspectives .

1. Are the two Treatment groups different at posttest? ;
2. Ignoring the CBT+ Placebo Condition, Did the DSC Treat ment change SPAI scores ?

Part I (30 -35 points)

1. Did the DSC Treatment "Work"? State the statistical hypotheses and conduct the appropriate statistical analysis.
   1. State the statistical hypotheses and specify your alpha level.
   2. List and evaluate the assumptions of the statistical test.
   3. Conduct an independent -sample t-test on the post-test SPAI scores (O ₂ vs. O ₅ )and specify the statistical decision.
   4. Interpret the 95% confidence interval of the statistic that is the focus of this statistical hypothesis.
   5. Calculate an estimate of effect size for this study. What did we learn from this statistic versus the t-test?
   6. Why is an independent sample t-test appropriate?
   7. Is this a true experiment (explain why or why not)?
      

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2. Did the DSC Treatment "Work"? State the statistical hypotheses and conduct the appropriate statistical analysis.
   1. State the statistical hypotheses and specify your alpha level.
   2. List and evaluate the assumptions of the statistical test.
   3. For the CBT+DSC Treatment condition only, conduct a paired / dependent-sample t-test on the change from pre-treatment to post-treatment SPAI scores (O ₄ vs. O ₅ )and specify the statistical decision.
   4. Interpret the 95% confidence interval of the statistic that is the focus of this statistical hypothesis.
   5. Calculate an estimate of effect size for this study. What did we learn from this statistic versus the t-test?
   6. Why is a paired sample t-test appropriate?

Part II. Write a "stand alone" results section that summarizes the statistical analyses and that addresses the researcher’s question, Did the DSC Treatment "Work"? Make sure to include a figure (e.g., error bar plot(s)) as part of the results section. Make sure to report and interpret the effect size for each analysis. (20 points)

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Solution: The downloadable solution consists of 8 pages, 826 words and 5 charts.
Deliverable: Word Document