a.
To explain: The effect of increase in the confidence level on the margin of error.
a.
Explanation of Solution
Given:
All other things have been remained constant.
The margin of error is positively related to the confidence level which means that increase in the confidence level tends to increase the margin of error and vice versa.
Thus, it could be said that increase in the confidence level would lead increase in margin of error.
b.
To explain: The effect of quadrupling the
b.
Explanation of Solution
The margin of error is negatively related to the confidence level which means that increase in the sample size tends to decrease the margin of error and vice versa.
Thus, it could be said that quadrupling the sample size would lead reduction in margin of error.
Chapter 8 Solutions
PRACTICE OF STATISTICS F/AP EXAM
Additional Math Textbook Solutions
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
STATS:DATA+MODELS-W/DVD
Elementary Statistics (13th Edition)
Essentials of Statistics, 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