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9.25 How do you choose to argue? In Thinking and Reasoning (Apr. 2007), researchers at Columbia University con- ducted a series of studies to assess the cognitive skills required for successful arguments. One study focused on whether one would choose to argue by weakening the opposing position or by strengthening the favored position. A sample of 52 graduate students in psychol- ogy was equally divided into two groups. Group 1 was presented with 10 items such that the argument always attempts to strengthens the favored position. Group 2 was presented with the same 10 items, but in this case the argument always attempts to weaken the nonfa- vored position. Each student then rated the 10 argu- ments on a five-point scale from very weak (1) to very strong (5). The variable of interest was the sum of the 10 item scores, called the total rating. Summary statis- tics for the data are shown in the accompanying table. Use the methodology of this chapter to compare the mean total ratings for the two groups at a = .05. Give a practical interpretation of the results in the words of the problem. 1.080, fail to reject Ho Group 1 (support favored position) Sample size 26 Mean 28.6 Standard 12.5 deviation Group 2 (weaken opposing position) 26 24.9 12.2

9.25 How do you choose to argue? In Thinking and Reasoning (Apr. 2007), researchers at Columbia University con- ducted a series of studies to assess the cognitive skills required for successful arguments. One study focused on whether one would choose to argue by weakening the opposing position or by strengthening the favored position. A sample of 52 graduate students in psychol- ogy was equally divided into two groups. Group 1 was presented with 10 items such that the argument always attempts to strengthens the favored position. Group 2 was presented with the same 10 items, but in this case the argument always attempts to weaken the nonfa- vored position. Each student then rated the 10 argu- ments on a five-point scale from very weak (1) to very strong (5). The variable of interest was the sum of the 10 item scores, called the total rating. Summary statis- tics for the data are shown in the accompanying table. Use the methodology of this chapter to compare the mean total ratings for the two groups at a = .05. Give a practical interpretation of the results in the words of the problem. 1.080, fail to reject Ho Group 1 (support favored position) Sample size 26 Mean 28.6 Standard 12.5 deviation Group 2 (weaken opposing position) 26 24.9 12.2

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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9.25 How do you choose to argue? In Thinking and Reasoning (Apr. 2007), researchers at Columbia University con- ducted a series of studies to assess the cognitive skills required for successful arguments. One study focused on whether one would choose to argue by weakening the opposing position or by strengthening the favored position. A sample of 52 graduate students in psychol- ogy was equally divided into two groups. Group 1 was presented with 10 items such that the argument always attempts to strengthens the favored position. Group 2 was presented with the same 10 items, but in this case the argument always attempts to weaken the nonfa- vored position. Each student then rated the 10 argu- ments on a five-point scale from very weak (1) to very strong (5). The variable of interest was the sum of the 10 item scores, called the total rating. Summary statis- tics for the data are shown in the accompanying table. Use the methodology of this chapter to compare the mean total ratings for the two groups at a = .05. Give a practical interpretation of the results in the words of the problem. 1.080, fail to reject Ho Group 1 (support favored position) Sample size 26 Mean 28.6 Standard 12.5 deviation Group 2 (weaken opposing position) 26 24.9 12.2
Transcribed Image Text:9.25 How do you choose to argue? In Thinking and Reasoning (Apr. 2007), researchers at Columbia University con- ducted a series of studies to assess the cognitive skills required for successful arguments. One study focused on whether one would choose to argue by weakening the opposing position or by strengthening the favored position. A sample of 52 graduate students in psychol- ogy was equally divided into two groups. Group 1 was presented with 10 items such that the argument always attempts to strengthens the favored position. Group 2 was presented with the same 10 items, but in this case the argument always attempts to weaken the nonfa- vored position. Each student then rated the 10 argu- ments on a five-point scale from very weak (1) to very strong (5). The variable of interest was the sum of the 10 item scores, called the total rating. Summary statis- tics for the data are shown in the accompanying table. Use the methodology of this chapter to compare the mean total ratings for the two groups at a = .05. Give a practical interpretation of the results in the words of the problem. 1.080, fail to reject Ho Group 1 (support favored position) Sample size 26 Mean 28.6 Standard 12.5 deviation Group 2 (weaken opposing position) 26 24.9 12.2
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