a. Is there is significant reduction in mental alertness after consuming tryptophan versus before? Use a one-tailed test with α = .05. b. Compute r2 to measure the size of the effect.
a. Is there is significant reduction in mental alertness after consuming tryptophan versus before? Use a one-tailed test with α = .05. b. Compute r2 to measure the size of the effect.
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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A researcher would like to examine how the chemical tryptophan, contained in foods such as turkey, can reduce mental alertness. A sample of n = 9 college students is obtained, and each student’s performance on a familiar video game is measured before and after eating a traditional Thanksgiving dinner including roasted turkey. The average mental alertness score dropped by MD= 14 points after the meal with SS= 1152 for the difference scores. a. Is there is significant reduction in mental alertness after consuming tryptophan versus before? Use a one-tailed test with α = .05. b. Compute r2 to measure the size of the effect.
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