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##### WEB CALCULATOR EXERCISE 5

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Question;Web Calculator Exercise 5;ANOVAs;1.;A;researcher is interested in comparing the effectiveness of three different;kinds of therapy for anger problems. Eight participants are randomly assigned;to three treatment conditions: Cognitive Therapy (CT), Cognitive-Behavioral;Therapy (CBT), and Interpersonal Therapy (IT). All participants complete the;weekly treatment for 8 weeks. Participants take an anger test before and after;the 8-week treatments. Each participant?s difference score (= anger score after;the treatment minus (?) anger score before the treatment) is shown in the;following table. The three therapists in this experiment have equal educational;levels and clinical experiences.;CT;CBT;IT;3;5;7;4;4;8;4;6;9;4;6;10;3;5;6;8;4;7;6;9;11;2;7;10;a.;What;statistical test should be used to analyze the data?;b.;Identify;H0 and Ha for this study.;c.;Conduct;the appropriate analysis.;d.;Should;H0 be rejected? What should the researcher conclude?;2.;A;teacher is interested in comparing the effects of three different types of;rehearsal methods (Rote rehearsal, Imagery, and Story) on number of words;recalled. Participants are randomly assigned into three different groups. In;each group, participants are asked to study a list of words using the assigned;method. The following table shows the result.;Rote rehearsal;Imagery;Story;5;5;7;5;4;6;4;6;8;6;7;9;5;7;6;4;6;9;3;8;8;5;5;10;6;7;9;a.;What;statistical test should be used to analyze the data?;b.;Identify;H0 and Ha for this study.;c.;Conduct;the appropriate analysis.;d.;Should;H0 be rejected? What should the researcher conclude?;e.;If;there is a significant difference, conduct the post hoc test.;3.;A;professor is interested in whether there is a difference in counseling;students? statistics competency scores among 1) those who have never taken any;statistics course, 2) those who have only taken an undergraduate statistics;course, 3) those who have taken COUN 503, and 4) those who have taken an advanced;statistic course while working on a Ph. D. The professor gathers information;from a random sample of students and obtains the statistics competency scores. The;scores are normally distributed.;1);2);3);4);7;11;13;15;6;11;14;14;8;10;15;15;5;12;12;15;4;13;13;10;4;15;13;15;a.;What;statistical test should be used to analyze these data?;b.;Identify;H0 and Ha for this study.;c.;Conduct;the appropriate analysis.;d.;Should;H0 be rejected? What should the researcher conclude?

Paper#62477 | Written in 18-Jul-2015

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