Concept explainers
(a)
To construct a
(a)
Answer to Problem 12E
Explanation of Solution
It is given in the question that the spike network commissioned a telephone poll of randomly selected U.S. men. Thus, we have,
Let us first check the conditions for the following as:
Random condition: It is satisfied as it is assumed that the sample is randomly selected.
Normal condition: It is satisfied as,
Thus, all the conditions are met. Therefore, now, to find the confidence interval we will use the calculator
Thus, the confidence interval will be as:
(b)
To use the confidence interval to test the appropriate hypothesis.
(b)
Answer to Problem 12E
The company should not by ads.
Explanation of Solution
It is given in the question that the spike network commissioned a telephone poll of randomly selected U.S. men. Thus, the confidence interval will be as:
Thus, by using the confidence interval calculated in part (a), we can say that since the confidence interval extends below
(c)
To explain could Spike claim to the advertiser that it is possible that
(c)
Answer to Problem 12E
Yes, he can calim.
Explanation of Solution
It is given in the question that the spike network commissioned a telephone poll of randomly selected U.S. men. Thus, the confidence interval will be as:
Thus, by using the confidence interval calculated in part (a), we can say that since the confidence interval extends below
Chapter 21 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Statistics for Psychology
Introductory Statistics (10th Edition)
Introductory Statistics
Elementary Statistics (13th Edition)
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Introductory Statistics (2nd 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