Dr. Jones is interested in the effects of caffeine on performance. She randomly splits her statistics class of 15 students into three groups. Prior to the final exam, she has one group take no caffeine prior to taking the exam, students in another group take 100 mg of caffeine, and students in the third group take 200 mg of caffeine. She records the grades in each condition. 0 mg 100 mg 200 mg 65 75 72 62 80 78 70 85 87 80 94 92 78 86 91 Identify and calculate the appropriate test statistic.Make sure to report the degrees of freedom for the statistical test (if appropriate). State your conclusions (use a two-tailed test with a = .05 for all tests). Compute an effect size.
Dr. Jones is interested in the effects of caffeine on performance. She randomly splits her statistics class of 15 students into three groups. Prior to the final exam, she has one group take no caffeine prior to taking the exam, students in another group take 100 mg of caffeine, and students in the third group take 200 mg of caffeine. She records the grades in each condition. 0 mg 100 mg 200 mg 65 75 72 62 80 78 70 85 87 80 94 92 78 86 91 Identify and calculate the appropriate test statistic.Make sure to report the degrees of freedom for the statistical test (if appropriate). State your conclusions (use a two-tailed test with a = .05 for all tests). Compute an effect size.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Dr. Jones is interested in the effects of caffeine on performance. She randomly splits her statistics class of 15 students into three groups. Prior to the final exam, she has one group take no caffeine prior to taking the exam, students in another group take 100 mg of caffeine, and students in the third group take 200 mg of caffeine. She records the grades in each condition.
|
0 mg |
100 mg |
200 mg |
|
65 |
75 |
72 |
|
62 |
80 |
78 |
|
70 |
85 |
87 |
|
80 |
94 |
92 |
|
78 |
86 |
91 |
- Identify and calculate the appropriate test statistic.Make sure to report the degrees of freedom for the statistical test (if appropriate).
- State your conclusions (use a two-tailed test with a = .05 for all tests).
- Compute an effect size.
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