Answered: A research team is investigating the…

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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Question

A research team is investigating the claim that a new sports performance beverage (GatorX) will increase the total time running during match play to at or above 70% of playing time (walking <30% of the time). Based on internal research, the performance company claims that the supplement improves running and sprinting times above the 70% threshold 75% of the time. In this case, on a team of 17 players, that would equate to 13 out of 17 players.

Because of the larger variability in experimental nutrition interventions, the probability of not obtaining the ‘expected’ results (or p-value) is .10 or 90%.

Calculate, a Chi-square test statistic, p-value, and critical value
Based on the following outcomes, does the nutritional claim hold weight? Is the null hypothesis that states there will not be a performance effect true or not true?
What are some of the limitations with this study?

Match Play Data w/ GatorX

	% of time Running
Athlete 1	65
Athlete 2	71
Athlete 3	72
Athlete 4	71
Athlete 5	78
Athlete 6	74
Athlete 7	67
Athlete 8	73
Athlete 9	68
Athlete 10	73
Athlete 11	72
Athlete 12	66
Athlete 13	75
Athlete 14	65
Athlete 15	71
Athlete 16	68
Athlete 17	68