a. To determine Explain the importance in randomly assigning subjects to two different diets. Explanation Given info: The result of an experiment is that the blood pressure of the subjects who fed with DASH diet is lowered by 6.7 points when compared to the subjects fed with usual diet. For this experiment all the diets were prepared by dieticians. Justification: Experimental study : In a designed experimental study, researchers allocate individuals to a certain group under study and change the values of an explanatory variable intentionally, after which, the values of the response variable for each group is recorded. Here, all the subjects are divided into two groups. Each group is randomly assigned to one of two treatments. Where one treatment is DASH diet and the other treatment is usual diet. Each group is kept under consideration after assigning diet program and the effectiveness of diet is observed. There is an attempt to influence the subject as the value of explanatory variable is influenced and controlled by researcher under study. Hence, the given study is a designed experiment. Confounding : Confounding in an experiment occurs when the effects of two or more explanatory variables or factors on a response variable cannot separately identified. Confounding usually occurs due to a different variable that has not been accounted for in the experiment... b. To determine Explain the reason behind the task of letting dieticians prepare the meals. c. To determine Explain the reason behind the usage of control group in the given study. Explain whether the researcher can conclude that the DASH diet program is effective, if the blood pressure of DASH diet subjects is lower at the end of the experiment than the starting of the experiment. d. To determine Find the additional information required to decide whether the average reduction in blood pressure of 6.7 points is statistically significant or not.

21st Edition

ISBN: 9780137643127

Author: DeVeaux

Publisher: PEARSON

See similar textbooks

Videos

Question

Chapter 11, Problem 46E

To determine

Explain the importance in randomly assigning subjects to two different diets.

To determine

Explain the reason behind the task of letting dieticians prepare the meals.

To determine

Explain the reason behind the usage of control group in the given study.

Explain whether the researcher can conclude that the DASH diet program is effective, if the blood pressure of DASH diet subjects is lower at the end of the experiment than the starting of the experiment.

To determine

Find the additional information required to decide whether the average reduction in blood pressure of 6.7 points is statistically significant or not.

Expert Solution & Answer

Chapter 11 Solutions

STATS:DATA+MODELS-MY LAB ACC >CUSTOM<

Ch. 11.3 - 1. At one time, a method called “gastric freezing”...Ch. 11.4 - Prob. 2JC Ch. 11 - Prob. 1E Ch. 11 - 2. E-commerce A business student conjectures that...Ch. 11 - 3. Tips A pizza delivery driver, always trying to...Ch. 11 - 4. Tomatoes You want to compare the tastiness and...Ch. 11 - 5. Tips II For the experiment described in...Ch. 11 - 6. Tomatoes II For the experiment described in...Ch. 11 - 7. Tips again For the experiment of Exercise 3,...Ch. 11 - 8. Tomatoes again For the experiment of Exercise...

Knowledge Booster

$Statistics$

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.

Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
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
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
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
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman

MATLAB: An Introduction with Applications

Statistics

ISBN:9781119256830

Author:Amos Gilat

Publisher:John Wiley & Sons Inc

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

ISBN:9781305504912

Author:Frederick J Gravetter, Larry B. Wallnau

Publisher:Cengage Learning

Elementary Statistics: Picturing the World (7th E...

Statistics

ISBN:9780134683416

Author:Ron Larson, Betsy Farber

Publisher:PEARSON

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

Statistics

ISBN:9781319013387

Author:David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:W. H. Freeman

SEE MORE TEXTBOOKS

What Are Research Ethics?; Author: HighSchoolScience101;https://www.youtube.com/watch?v=nX4c3V23DZI;License: Standard YouTube License, CC-BY

What is Ethics in Research - ethics in research (research ethics); Author: Chee-Onn Leong;https://www.youtube.com/watch?v=W8Vk0sXtMGU;License: Standard YouTube License, CC-BY