Assignment: Makeup
Researchers are interested if two popular diet pills on the market work equally well for people of normal weight and people who are overweight. Participants classified as normal or overweight were randomly assigned to take either Diet Pill A or Diet Pill B. The number of pounds they lost in that 4 week period was measured.
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Diet Aid
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Pill A
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Pill B
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Weight
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Normal
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4
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6
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Overweight
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10
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8
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1. Evaluate the table above. Are there main effects of Diet Aid or Weight? Is there an interaction? Write your conclusions as you would in a formal paper.
How does type of evidence and type of case influence likelihood of guilt judgments? Participants are randomly assigned to read either about a rape case or murder case. The type of evidence presented at the trial was manipulated so that participants read about either DNA evidence, eyewitness evidence, or both. Likelihood of guilt judgments (on a scale from 1-9) was measured.
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Evidence
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Type of Case
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DNA
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Eyewitness
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Both
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Means
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Rape
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6
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5
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7
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8
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5
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8
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9
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6
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9
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8
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7
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8
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9
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5
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9
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Mean
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8.0
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5.6
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8.2
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7.27
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Murder
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4
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8
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6
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5
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8
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6
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5
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6
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9
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6
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7
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8
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4
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9
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8
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Mean
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4.8
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7.6
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7.4
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6.60
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Group Means
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6.40
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6.60
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7.80
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6.93
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2. Complete the Summary Table.
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Source
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SS
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df
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MS
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F
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C (Case)
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E (Evidence)
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CE
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Error
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Total
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3. What are your conclusions? Be specific (i.e., if there are significant differences, specify the direction). If follow-up comparisons are necessary, use Tukey's HSD test.
4. Calculate the simple effects for Case Type at each level of Evidence. Which are significant? INDICATE THE CRITICAL F YOU USED.
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Source
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SS
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df
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MS
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F
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C at DNA
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C at Eyewitness
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C at Both
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Error
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5. Calculate omega squared for each main effect and the interaction. Interpret what these values mean.
Format your assignment according to the following formatting requirements:
1. The answer should be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides.
2. The response also includes a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
3. Also include a reference page. The Citations and references should follow APA format. The reference page is not included in the required page length.