PSY230-A5Part2-SpringA2018(1).docx - SpringB2018 PSY230...

This preview shows page 1 - 2 out of 4 pages.

SpringB2018 PSY230: Assignment A-5 Part II (30 points) Assignment Direction: 1. Complete Part I of this assignment first, if you have not done so. It will help you become proficient in answering the questions here in Part II. 2. Check out the “Assignment Guides” in the Navigation menu in Blackboard 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. Use this document to fill in the answers to the questions. You must type out a clear answer to each question, even if the answer is also contained in the Excel file submitted to show work . Q1) Independent-Samples t Test (15 points total) A high school teacher would like to know whether students who have participated in a test prep program score significantly higher on a standardized test than those who have not participated in such a program. She collects the percentile scores from a test prep group of 16 students and a control group (no test prep) of 16 students. Both groups contain only female students and all students have similar school grades. The teacher predicts that the test prep group should out-perform the control group on the standardized test. She sets the significance level at α = .05 for the hypothesis test. Student ID Test Prep score Student ID Control score 1 76 17 84 2 73 18 76 3 59 19 78 4 67 20 88 5 71 21 85 6 74 22 79 7 78 23 69 8 64 24 76 9 78 25 90 10 68 26 77 11 92 27 89 12 75 28 82 13 70 29 64 14 62 30 86 15 71 31 81 16 66 32 83 a. What is the dependent (outcome) variable? What is the independent (grouping) variable?
b. Create the null and alternative hypotheses (directional) for this study, using both words and symbol notation
c. Calculate M 1 and M 2

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture