A researcher would like to examine how the chemical tryptophan, contained in foods such as turkey, can affect mental alert ness. 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 roast turkey. The average score dropped by MD = 14 points after the meal with SS = 1152 for the difference scores. 1. Is there a significant difference in performance before eating versus after eating? Use a two-tailed test with a = .05. Show all calculations. a. State the research hypotheses b. Identify the critical value c. Calculate the test statistic d. Evaluate the null hypothesis

A researcher would like to examine how the chemical tryptophan, contained in foods such as turkey, can affect mental alert ness. 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 roast turkey. The average score dropped by MD = 14 points after the meal with SS = 1152 for the difference scores. 1. Is there a significant difference in performance before eating versus after eating? Use a two-tailed test with a = .05. Show all calculations. a. State the research hypotheses b. Identify the critical value c. Calculate the test statistic d. Evaluate the null hypothesis

Name: A researcher would like to examine how thechemical tryptophan, contai
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Description: A researcher would like to examine how thechemical tryptophan, contained in foods suchas turkey, can affect mental alert ness. Asample of n = 9 college students is obtained,and each student's performance on a familiarvideo game is measured before an

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 affect 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 roast turkey. The average score dropped by M = 14 points after the meal with SS = 1152 for the difference scores. A. Is there is significant difference in performance before eating versus after eating? Use a two-tailed test with α = .05. SMD = ___________________________ tcritical = ________________________ tcalculated = ________________________ Decision = _______________________ B. Compute r2 to measure the size of the effect. r2 = _____________________________ C. Write a sentence demonstrating how the outcome of the test and the measure of effect size would…
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