A researcher would like to evaluate the effectiveness of a treatment program designed to reduce aggressiveness in domestic violence offenders. Prior to participating in the program, each of n = 8 participants has their aggressiveness rated on a scale from 1 to 10 by a clinical psychologist. After participating in the program, a second aggressiveness rating is recorded. The data are below. Using this information answer the questions below. Before After 6 2 8 3 9 4 8 1 10 2 5 3 9 8 7 7 Compute the mean for the sample of difference scores (MD). Compute the estimate for the standard error ( Compute the t statistic.
A researcher would like to evaluate the effectiveness of a treatment program designed to reduce aggressiveness in domestic violence offenders. Prior to participating in the program, each of n = 8 participants has their aggressiveness rated on a scale from 1 to 10 by a clinical psychologist. After participating in the program, a second aggressiveness rating is recorded. The data are below. Using this information answer the questions below. Before After 6 2 8 3 9 4 8 1 10 2 5 3 9 8 7 7 Compute the mean for the sample of difference scores (MD). Compute the estimate for the standard error ( Compute the t statistic.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
Related questions
Question
- A researcher would like to evaluate the effectiveness of a treatment program designed to reduce aggressiveness in domestic violence offenders. Prior to participating in the program, each of n = 8 participants has their aggressiveness rated on a scale from 1 to 10 by a clinical psychologist. After participating in the program, a second aggressiveness rating is recorded. The data are below. Using this information answer the questions below.
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10 |
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8 |
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7 |
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Compute the mean for the sample of difference scores (MD). |
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Compute the estimate for the standard error ( |
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Compute the t statistic. |
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Do the results indicate that the program has a statically significant effect? |
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Compute r2 and interpret the size of the effect. |
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Write up the results of the t test following the American Psychological Association (APA) guidelines. |
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