2 questions Are the data sufficient to indicate a significant change in cholesterol level? Test with α = .05.2. Compute r2, the percentage of variance accounted for by the treatment, to measure the size of the treatment. Question 2-A researcher for a cereal company wanted to demonstrate the health benefits of eatingoatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet withoutany oatmeal for 30 days. At the end of the 30-day period, cholesterol was measured for eachindividual. Then the participants began a second 30-day period in which they repeatedexactly the same diet except that they added 2 cups of oatmeal each day. After the second 30-day period, cholesterol levels were measured again. The following table summarizes the datacollected in this study:Cholesterol scores at Cholesterol scores at thethe end of the 30-dayperiodeDifference Score ineach pair (D)( second30 days – first30days)Participantend of the second 30-day periode174166.190-16183.-17155e1893e170-15e4210-21178.163e-15e185e167-18-21e-11e191e170157e168e9186-176-10a. Are the data sufficient to indicate a significant change in cholesterol level? Test with a= .05.Solution:

Given information: The data represents the cholesterol scores at the end of the 30-day period and…

A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet without any oatmeal for 30 days. At the end of the 30-day period, cholesterol was measured for each econd 30 day neriod in which theu reneated individual Then the narticinants began

A researcher for a cereal company wanted to demonstrate the health benefits of eating oatmeal. A sample of 9 volunteers was obtained and each participant ate a fixed diet without any oatmeal for 30 days. At the end of the 30-day period, cholesterol was measured for each econd 30 day neriod in which theu reneated individual Then the narticinants began

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter2: Systems Of Linear Equations

Section2.4: Applications

Problem 28EQ

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