PSY230 - Module 5 - Assignment.docx - PSY230 SummerB2020 M5...

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PSY230SummerB2020M5 Assignment (30 points)General instruction:1.Complete the guided Practice Problemfirst, 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 (15 points total)In a cognitive psychology experiment, the researcher is interested in whether encoding condition has a significant effect on memory for a set of drawings. In encoding condition A, subjects are asked to name the object in each drawing; in encoding condition B, subjects are asked to name the color of each drawing. Then all subjects are tested on their memory of the drawings. Each recruited subject is randomly assigned to either encoding condition A or encoding condition B. Based on memory theories, the researcher hypothesized that condition A (object naming) would lead to significantly better memory compared to condition B (color naming), and she sets the significance level at α = .05 for a one-tailed test.Hint: You may remember a similar scenario in the previous assignment, but with a crucial difference. In the previous assignment, each subject is tested in BOTH condition A and condition B, while each subject here is tested in only ONE condition (either A or B).SubjectIDEncodingASubjectIDEncodingB187138528014803781576476167758617866771868783198588220799912189109022851195238212832480a. What is the dependent (outcome) variable? What is the independent (grouping) variable? (1 point total: .5 for each variable) b. Create the null and alternative hypotheses for this study, using both words and symbol notation.Note that the hypotheses should be directional.(1 point total: .5 for each hypothesis, both written and symbol notation need to be correct to earn the credit for each hypothesis)
PSY230SummerB2020ALTERNATIVE HYPOTHESIS: Ha:μ≠0,The encoding condition has an effect on memory. c. Calculate M1 andM2(1 point total: .5 point per sample mean, both process and result must be correct to earn the credit) d. Calculate df1 , df2, and dftotal (1 point total: deduct .5 for each error) e. Calculateestimated variance for population 1 (s12) and estimated variance for population 2 (s2)

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