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Name: Dr. Jones is interested in the effects of caffeine on performance. Sh
Uploaded: 2024-03-20T07:07:12.000Z
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Description: 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

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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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