a)
To explain whether the study is experimental or not.
a)
Answer to Problem 1E
No, the study is observational.
Explanation of Solution
First need to understand about the experimental study and observational study:
Experimental study: Assigning people or things to groups and applying some treatment to one group, while the other group does not receive the treatment.
Observation study: In an observational study, measure or survey members of a sample without trying to affect them.
The study is not experimental because no treatment is imposed on the subjects. Hence, the study is an observational study.
b)
To explain the differences in score are not caused by differences in parental income.
b)
Answer to Problem 1E
The difference might be due to lurking variables.
Explanation of Solution
First need to know about the lurking variable.
The lurking variable is not an explanatory variable but there is indirect effect on the relationship between the variables.
Therefore, in this study, the relationship between parental income and SAT score can be due to lurking variables present in the study. That’s why we cannot conclude that the differences in score are not caused by differences in parental income.
Want to see more full solutions like this?
Chapter 13 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Introductory Statistics
Introductory Statistics (2nd Edition)
STATS:DATA+MODELS-W/DVD
Elementary Statistics (13th Edition)
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman