Homework Help is Here – Start Your Trial Now!
Math
Statistics
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

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
See similar textbooks
icon
Related questions
Question

2 questions 

  1. 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 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 individual. Then the participants began a second 30-day period in which they repeated exactly 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 data collected in this study: Cholesterol scores at Cholesterol scores at the the end of the 30-day periode Difference Score in each pair (D)( second 30 days – first 30days) Participant end of the second 30- day periode 174 166. 190 -16 183. -17 155e 189 3e 170 -15e 4 210 -21 178. 163e -15e 185e 167 -18 -21e -11e 191e 170 157e 168e 9 186- 176 -10 a. Are the data sufficient to indicate a significant change in cholesterol level? Test with a = .05. Solution:
Transcribed Image Text:Question 2- 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 individual. Then the participants began a second 30-day period in which they repeated exactly 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 data collected in this study: Cholesterol scores at Cholesterol scores at the the end of the 30-day periode Difference Score in each pair (D)( second 30 days – first 30days) Participant end of the second 30- day periode 174 166. 190 -16 183. -17 155e 189 3e 170 -15e 4 210 -21 178. 163e -15e 185e 167 -18 -21e -11e 191e 170 157e 168e 9 186- 176 -10 a. Are the data sufficient to indicate a significant change in cholesterol level? Test with a = .05. Solution:
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 5 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Anova and Design of Experiments
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS