PSY230 Assignment A5 .docx - FallA2019 PSY230 Assignment...

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FallA2019 PSY230: Assignment A-5 Part II (50 points) Assignment Direction: 1. Complete Part I of this assignment first, if you have not done so, because it provides guided practice on questions similar to the questions in Part II here. 2. Check out the “Important Resources and Assignment Guides” in the Modules section on Canvas to see how to properly show your math work. There are also examples of the APA-style tables and graphs (figures) for your reference. 3. Your submitted assignment must be in Word format, with a clear answer typed out for each question, even if you show math work in a separate Excel file . Q1) Independent-Samples t Test (25 points total) A psychologist would like to evaluate the effectiveness of a 6-week stress-reduction program on job satisfaction in elementary school teachers. The psychologist conducted a small study to examine the potential effect of the 6-week program on job satisfaction as measured on a 10- item scale at the end of the program. A composite score ranging from 0 to 10 was computed from the scale for each subject with 10 indicating the highest level of job satisfaction. The psychologist recruited 10 teachers to participate in stress-reduction program and 12 teachers with similar demographics who do not participate in the stress-reduction program. The data are listed in the table below. The psychologist strongly suspects based on prior research that job satisfaction scores will rise as a result of the stress-reduction program. The alpha level is set at . 05 for the hypothesis test. Stress-reduction program No stress-reduction program Subject ID # Job satisfaction score Subject ID # Job satisfaction score 1 6 11 4 2 7 12 6 3 4 13 6 4 8 14 5 5 7 15 7 6 6 16 6 7 7 17 3 8 5 18 4 9 8 19 5 10 4 20 7 21 5 22 6 a) What is the dependent (outcome) variable? What is the independent (grouping) variable?
FallA2019 b) Create the null and alternative hypotheses for this study, using both words and symbol notation. (2 points total: 1 per hypothesis- .5 for written format, .5 for notation)