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Kwame, a social psychologist, wants to know if people would commit mischievous acts if they knew they would go undetected. To find out, he has participants complete a role-playing game in virtual reality, randomly assigning them to play with or without an "invisibility cloak." Kwame conducts the appropriate hypothesis test to determine whether wearing such a cloak affects the number of mischievous acts committed (a = .05, two-tailed). Here is part of his JASP output:

Kwame, a social psychologist, wants to know if people would commit mischievous acts if they knew they would go undetected. To find out, he has participants complete a role-playing game in virtual reality, randomly assigning them to play with or without an "invisibility cloak." Kwame conducts the appropriate hypothesis test to determine whether wearing such a cloak affects the number of mischievous acts committed (a = .05, two-tailed). Here is part of his JASP output:

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
Section11.5: Interpreting Data
Problem 1C
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9. Kwame, a social psychologist, wants to know if people would commit mischievous acts if they knew they would go undetected. To find out, he has participants complete a role-playing game in virtual reality, randomly assigning them to play with or without an "invisibility cloak." Kwame conducts the appropriate hypothesis test to determine whether wearing such a cloak affects the number of mischievous acts committed (a = .05, two-tailed). Here is part of his JASP output: 95% CI for Mean Difference Mean Difference SE Difference Lower Upper Cohen's d 1.250 0.730 -0.263 2.763 0.700 Descriptives Group Descriptives Group N Mean SD SE MischievousActs Cloak No Cloak 12 5.000 1.651 0.477 12 3.750 1.913 0.552 : What is terit in this test? What is toht in this test? (Hint: How is t computed? Consider the formula.) Why does it make sense that the 95% confidence interval for this test includes 0? Why might Kwame be especially concerned that he has made a Type II error in this case? Consider the two key factors that determine statistical power.
Transcribed Image Text:9. Kwame, a social psychologist, wants to know if people would commit mischievous acts if they knew they would go undetected. To find out, he has participants complete a role-playing game in virtual reality, randomly assigning them to play with or without an "invisibility cloak." Kwame conducts the appropriate hypothesis test to determine whether wearing such a cloak affects the number of mischievous acts committed (a = .05, two-tailed). Here is part of his JASP output: 95% CI for Mean Difference Mean Difference SE Difference Lower Upper Cohen's d 1.250 0.730 -0.263 2.763 0.700 Descriptives Group Descriptives Group N Mean SD SE MischievousActs Cloak No Cloak 12 5.000 1.651 0.477 12 3.750 1.913 0.552 : What is terit in this test? What is toht in this test? (Hint: How is t computed? Consider the formula.) Why does it make sense that the 95% confidence interval for this test includes 0? Why might Kwame be especially concerned that he has made a Type II error in this case? Consider the two key factors that determine statistical power.
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