Concept explainers
To find: that is this convincing evidence that using drugs helped improve their performance.
Explanation of Solution
Given:
Probability of pitched is 0.5 of showing improvement without taking drugs
Formula used:
Calculation:
Probability of pitched is 0.5 of showing improvement without taking drugs which means that 5 out of 10 times the pitcher does not improve.
Improve: Digits 0, 1, 2, 3, 4
Not improve: Digits 5, 6, 7, 8, 9
Using a TI-83 calculator do the simulation or using table B
Command is for 19 values:
Observed the number of pitchers out of 19 pitchers that showed improvement and repeating the simulation 100 times.
8, 9, 10, 9, 11, 8, 16, 7, 8, 9 ...9
4 out of the 100 values are 14
Therefore the estimated probability is 0.04 (answer could vary)
Chapter 7 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Fundamentals of Statistics (5th Edition)
Introductory Statistics
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