Concept explainers
a.
To find: The mean of the sampling distribution of
a.
Answer to Problem 36E
The mean is 0.40.
Explanation of Solution
Given:
The mean of the sampling distribution can be calculated as:
Here, mean is 0.40 because of the unbiased estimator property.
b.
To find: The standard deviation of the sample proportion.
b.
Answer to Problem 36E
The standard deviation is 0.0115954.
Explanation of Solution
Calculation:
The standard deviation of the sample proportion is computed as:
Thus, the standard deviation is 0.0115954.
c.
To find: Whether the normality assumptions are satisfied or not.
c.
Explanation of Solution
Here,
Thus, normal approximation could be used here.
d.
To find: The probability that 44% or more saying that they attended church or synagogue. Also, comment on the result of the poll.
d.
Explanation of Solution
Calculation:
The probability that 44% or more saying that they attended church or synagogue. Also, comment on the result of the poll is computed as:
Here, probability is less than 0.05. Thus, there is doubt on the occurrence of the
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Basic Business Statistics, Student Value Edition
Introductory Statistics
Elementary Statistics
Statistics: The Art and Science of Learning from Data (4th Edition)
Introductory Statistics
Elementary Statistics: Picturing the World (7th 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