# PSY230-M5Assignment-SpringA2020.docx - PSY230 SpringA2020...

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PSY230SpringA2020M5 Assignment (30 points)General instruction:1.Complete the guidedPractice Problemfirst, if you have not done so. It will help you become proficient inanswering the questions in this assignment.2.Check out the module,Assignment Guides,which demonstrates how to show the math/process work andprovides 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 eachquestion,even if the answer is also contained in the Excel file submitted to show work.Q1) Independent-SamplestTest (15 points total)In a cognitive psychology experiment, the researcher is interested in whether encoding condition has asignificant effect on memory for a set of drawings. In encoding condition A, subjects are asked to namethe object in each drawing; in encoding condition B, subjects are asked to name the color of eachdrawing. Then all subjects are tested on their memory of the drawings. Each recruited subject israndomly assigned to either encoding condition A or encoding condition B.Based on memory theories, the researcher hypothesized that condition A (object naming) would lead tosignificantly better memory compared to condition B (color naming), and she sets the significance levelat α = .05 for a one-tailed test.Hint: You may remember a similar scenario in the previous assignment, but with a crucial difference. Inthe previous assignment, each subject is tested in BOTH condition A and condition B, while each subjecthere is tested in only ONE condition (either A or B).SubjectIDEncodingASubjectIDEncodingB187138528014803781576476167758617866771868783198588220799912189109022851195238212832480a. What is the dependent (outcome) variable? What is the independent (grouping) variable?
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b. Create the null and alternative hypotheses for this study, using both words and symbol notation.2
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PSY230SpringA2020Alternative Hypothesis- Participants with condition A had significantly better memory thanparticipants with condition B.H1: µ1≠ µ2

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