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A group of health conscious researchers were interested in ways to lower blood pressure.  The study consisted of 90 participants. 30 participants were randomly assigned to eat a heart healthy diet, 30 were randomly assigned to a heart healthy exercise routine, and 30 were randomly assigned to do nothing and serve as a control. After a month of their assigned intervention, participants' blood pressure was measured.  Which statistical test should be used to compare the 3 intervention types on post-treatment blood pressure? df between= ? df within= ?  df total= ?

A group of health conscious researchers were interested in ways to lower blood pressure.  The study consisted of 90 participants. 30 participants were randomly assigned to eat a heart healthy diet, 30 were randomly assigned to a heart healthy exercise routine, and 30 were randomly assigned to do nothing and serve as a control. After a month of their assigned intervention, participants' blood pressure was measured.  Which statistical test should be used to compare the 3 intervention types on post-treatment blood pressure? df between= ? df within= ?  df total= ?

MATLAB: An Introduction with Applications
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 group of health conscious researchers were interested in ways to lower blood pressure.  The study consisted of 90 participants. 30 participants were randomly assigned to eat a heart healthy diet, 30 were randomly assigned to a heart healthy exercise routine, and 30 were randomly assigned to do nothing and serve as a control. After a month of their assigned intervention, participants' blood pressure was measured.  Which statistical test should be used to compare the 3 intervention types on post-treatment blood pressure?

df between= ?
df within= ? 
df total= ?
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