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The psychologists are interested in whether depres...




The psychologists are interested in whether depressed people undergoing group therapy will perform a different number of activities of daily living after group therapy. Therefore, the psychologists have randomly selected 12 depressed clients to undergo a six-week group therapy program. Use the five steps of hypothesis testing to determine whether the average number of activities of daily living (shown below) obtained after therapy is significantly different than a mean number of activities of 14 that is typical for similar depressed people. Test the difference at the .05 level of significance (and, for practice, at the .01 level). In Step 2, show all calculations. As part of Step 5, indicate whether the psychologists should recommend group therapy for all depressed people based on evaluation of the null hypothesis at both levels of significance and calculate the effect size. Client--After therapy A--17 B--15 C--12 D--21 E--16 F--18 G--17 H--14 I--13 J--15 K--12 L--19 In Problem 1, the data were entered in two columns because: Answer a-before and after measurements were taken. b-each participant had to be described by therapy type and "adl" score. c-entering them in one column would be too long. d-they were groups of eight. Next Question The SPSS output for Problem 1 included descriptive statistics for the two groups. The means for group 1 and group 2 were: Answer 15.0 and 16.7 18.0 and 16.0 16.0 and 17.5 16.0 and 16.5 What was the t-score for Problem 1? Answer -1.43 0.45 -1.05 1.75 What was the degree of freedom in Problem 1? Answer 16 15 14 13


Paper#13413 | Written in 18-Jul-2015

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