Answered: Medical researchers want to know if…

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

Medical researchers want to know if Tylenol, Advil, Ibuprofen, and Aleve different medications lead to different mean pain level reductions in patients. They randomly assign 20 patients to use each medication for one month, then measure the pain level both before and after the patient started using the medication to find the mean pain level reduction for each medication.

To understand whether there is a statistically significant difference in the mean pain level reduction that results from these medications, researchers can conduct a one-way ANOVA, using “type of medication” as the factor and “pain level reduction” as the response.

If the overall f-value of the ANOVA is lower than our significance level, then we can conclude that there is a statistically significant difference in mean pain level reduction between the four medications.

a.Identify the Dependent Variable and Independent variable including the levels.

b.What is the df _between, df _within, and df total?

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