Concept explainers
(a)
To find: the probability that a smoker is not one of the first four students interviewed.
(a)
Answer to Problem 20RE
0.2401
Explanation of Solution
The chance that a high school student would smoke is 0.30
The chance that a smoker is not one of the first 4 students’ interviews is
There is a 24.01% probability that none of the first four students that are interviewing is a smoker.
(b)
To find: the chance that the sixth person to select is the first smoker.
(b)
Answer to Problem 20RE
0.0504
Explanation of Solution
Let X be the number of interviews with students to determine the first smoker.
There is a 5% probability that the 6th person will be the first smoker you interview.
(c)
To Find: the chance of selecting no more than 2 smokers out of 10 people.
(c)
Answer to Problem 20RE
0.38
Explanation of Solution
Formula used:
Calculation:
Let X be the number of tobacco-smoking students.
The total amount of students is 10.
X is binom (10, 0.3)
There is a 38% risk of no more than 2 students smoking.
Chapter PIV Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
Additional Math Textbook Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Elementary Statistics
Introductory Statistics
Statistics for Business and Economics (13th Edition)
Introductory Statistics (10th 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