Questions to be Graded Exercise 32.docx

Assuming a true null hypothesis p 0001 would be the

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Assuming a true null hypothesis, P< 0.001 would be the likelihood of such a t-test being obtained.
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7. On average, did the affective distress scores improve or deteriorate over time? Provide a rationale for your answer. Overall the scores got worse as time progressed. There were only two individuals that improved. Only 20% of the individuals were better. 8. Write your interpretation of the results as you would in an APA-formatted journal . After performing t tests for both groups ,the study concluded that the group treated for periodontitis had a lower probing depth from baseline to post-treatment. The t value was 10.59 and P was <0.001. 1. What do the results indicate regarding the impact of the rehabilitation on emotional distress levels? There is a significant decrease in distress after treatment, indicating the treatment is effective. The t value is 2.89 and P is < 0.05 indicating that the null hypothesis can be rejected . 10. What are the weaknesses of the design in this example? It seems to be a pilot study with a low sample size. Although it will help in the creation of further, larger studies, the results of this study can only be interpreted with caution and are certainly not generalizable.
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