Questions to be Graded Exercise 32.docx

# Tests of normality kolmogorov smirnov a shapiro wilk

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Tests of Normality Kolmogorov-Smirnov a Shapiro-Wilk Statistic df Sig. Statistic df Sig. ADS_Baseline .134 10 .200 * .953 10 .705 ADS_Post_TX .235 10 .124 .912 10 .292 3. What are the means for the baseline and posttreatment affective distress scores, respectively? The mean for the baseline score is 3.03, the mean for the post-treatment is 2.04 Paired Samples Statistics

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Mean N Std. Deviation Std. Error Mean Pair 1 ADS_Baseline 3.030 10 1.6640 .5262 ADS_Post_TX 2.040 10 .9834 .3110 4. What is the paired samples t -test value? The t-test value is 2.865 Paired Differences t df Sig. (2-tailed) Mean Std. Deviation Std. Error Mean 95% Confidence Interval of the Difference Lower Upper Pair 1 ADS_Baseline - ADS_Post_TX .9900 1.0929 .3456 .2082 1.7718 2.865 9 .019 5. Is the t -test significant at α = 0.05? Specify how you arrived at your answer. Yes, when the alpha is determined it depends on how severe the side effects are. The lower the alpha, the more serious the consequences are so you want as accurate a study as possible. If the alpha is a higher number the less serious the side effects. The Therefore, an alpha of 0.05 is appropriate. 6. If using SPSS, what is the exact likelihood of obtaining a t- test value at least as extreme as or as close to the one that was actually observed, assuming that the null hypothesis is true?
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