 , 12.11.2019 04:31, christhegreat1

# Aresearcher 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 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. b. compute r2 to measure the size of the effect. c. write a sentence demonstrating how the outcome of the test and the measure of effect size would appear in a research report. Answers: 1  ### Other questions on the subject: Mathematics Mathematics, 21.06.2019 14:00, miriamnelson7545
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Aresearcher would like to examine how the chemical tryptophan, contained in foods such as turkey, ca...

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