ill AT&T; 8:05 PM * 70%- × sm hw four chapter 10 stats.docx Chapter 10 HW assign
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ill AT&T; 8:05 PM * 70%- × sm hw four chapter 10 stats.docx Chapter 10 HW assignment Understanding Ex s with Two G Twenty sets of depressed twins are obtained for a study on the effects of a new antidepressant. In each twin set, one twin is assigned to receive the drug, and the other is designed to receive the placebo. Three months later, depression levels are measured on a scale from 1 (not at all depressed) to 7 (very depressed). The following data were obtained: GROUP Received GROUP 2- Received placebo Variable level GROUP N Mean SD GROUP I 10 GROUP210 3.21 5.77 1.035 1.772 5.785 d-9 p=0.017 Cohen's d 1. What is the independent variable? 2. What is the dependent variable? 3. What kind of research design was used? 4. What kind of statistical analysis was used? 5. Is the effect size small, medium, or large? How do you know? 6. Write an APA-format conclusion. Open With PrintExplanation / Answer
1. The independent variable in the study is medication.
2. The dependent variable in the study is depression.
3. The research design used is the between subjects design, as it involves the use of two participant groups.
4. The t-test was used in this case as the study compared the differences in the means of the two experimental conditions.
Please post the other questions separately as we are supposed to answer just one question or four sub parts of a question.
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