# MOD 5 ASSIGNMENT.docx - PSY230 SummerA2019 M5 Assignment...

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PSY230 SummerA2019 M5 Assignment General instruction: 1. Complete the guided Practice Problem first, if you have not done so. It will help you become proficient in answering the questions in this assignment. 2. Check out the module, Assignment Guides , which demonstrates how to show the math/process work and provides instruction on essential procedures in Word and Excel, and APA formatting examples. 3. Use this Word 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 (20 points total) In a cognitive psychology experiment, the researcher is interested in whether encoding condition has a significant effect on memory for a list of words. She recruits subjects to participate in the experiment. Each recruited subject is randomly assigned to either encoding condition A or encoding condition B. The researcher would like to leave the hypothesis non-directional without predicting which encoding condition would lead to better memory, and she sets the significance level at α = .05 for a two-tailed test. Hint: You may remember a similar scenario in the previous assignment, but with a crucial difference. In the previous assignment, each subject attends BOTH condition A and condition B, while each subject here attends only ONE condition (either A or B). Subject ID Encoding A Subject ID Encoding B 1 87 11 85 2 80 12 80 3 78 13 76 4 76 14 77 5 86 15 86 6 77 16 68 7 83 17 85 8 82 18 79 9 91 19 89 10 90 20 85 a. What is the dependent (outcome) variable? What is the independent (grouping) variable? (2 points total: 1 for each variable)
b. Create the null and alternative hypotheses (non-directional) for this study, using both words and symbol notation
c. Calculate M 1 and M 2
PSY230 SummerA2019 Sum of encoding B / # of samples (10) M2=81