The Insurance Institute for Highway Safety issued a news release titled "Teen Drivers Often Ignoring Bans on Using Cell Phones" (June 9, 2008). The following quote is from the news release: Just 1-2 months prior to the ban's Dec. 1, 2006, start, 11% of teen drivers were observed using cell phones as they left school in the afternoon. About 5 months after the ban took effect, 12% of teen drivers were observed using cell phones. Suppose that the two samples of teen drivers (before the ban, after the ban) are repre- sentative of these populations of teen drivers. Suppose also that 200 teen drivers were observed before the ban and that 150 teen drivers were observed after the ban. (a) Construct and interpret a 95% large-sample confidence interval for the difference in the proportion using a cell phone while driving before the ban and the proportion after the ban. (b) Is 0 included in the confidence interval of Part (a)? What does this imply about the difference in the population proportions?
The Insurance Institute for Highway Safety issued a news release titled "Teen Drivers Often Ignoring Bans on Using Cell Phones" (June 9, 2008). The following quote is from the news release: Just 1-2 months prior to the ban's Dec. 1, 2006, start, 11% of teen drivers were observed using cell phones as they left school in the afternoon. About 5 months after the ban took effect, 12% of teen drivers were observed using cell phones. Suppose that the two samples of teen drivers (before the ban, after the ban) are repre- sentative of these populations of teen drivers. Suppose also that 200 teen drivers were observed before the ban and that 150 teen drivers were observed after the ban. (a) Construct and interpret a 95% large-sample confidence interval for the difference in the proportion using a cell phone while driving before the ban and the proportion after the ban. (b) Is 0 included in the confidence interval of Part (a)? What does this imply about the difference in the population proportions?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
please show all steps and please write out complete SENTENCES as to how you did each step. And explaining what you did to get the answer!!! Thanks
![The Insurance Institute for Highway Safety issued a news release titled "Teen
Drivers Often Ignoring Bans on Using Cell Phones" (June 9, 2008). The following quote
is from the news release:
Just 1-2 months prior to the ban's Dec. 1, 2006, start, 11% of teen drivers
were observed using cell phones as they left school in the afternoon. About 5
months after the ban took effect, 12% of teen drivers were observed using cell
phones.
Suppose that the two samples of teen drivers (before the ban, after the ban) are repre-
sentative of these populations of teen drivers. Suppose also that 200 teen drivers were
observed before the ban and that 150 teen drivers were observed after the ban.
(a) Construct and interpret a 95% large-sample confidence interval for the
difference in the proportion using a cell phone while driving before the ban and the
proportion after the ban.
(b) Is 0 included in the confidence interval of Part (a)? What does this
imply about the difference in the population proportions?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffb3ea843-8c29-4092-98d1-bb88a69287a3%2F1c0935f2-de6a-47d8-b5f5-d8031dcd33f2%2F64fvwdb.jpeg&w=3840&q=75)
Transcribed Image Text:The Insurance Institute for Highway Safety issued a news release titled "Teen
Drivers Often Ignoring Bans on Using Cell Phones" (June 9, 2008). The following quote
is from the news release:
Just 1-2 months prior to the ban's Dec. 1, 2006, start, 11% of teen drivers
were observed using cell phones as they left school in the afternoon. About 5
months after the ban took effect, 12% of teen drivers were observed using cell
phones.
Suppose that the two samples of teen drivers (before the ban, after the ban) are repre-
sentative of these populations of teen drivers. Suppose also that 200 teen drivers were
observed before the ban and that 150 teen drivers were observed after the ban.
(a) Construct and interpret a 95% large-sample confidence interval for the
difference in the proportion using a cell phone while driving before the ban and the
proportion after the ban.
(b) Is 0 included in the confidence interval of Part (a)? What does this
imply about the difference in the population proportions?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
![MATLAB: An Introduction with Applications](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
![MATLAB: An Introduction with Applications](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
![Elementary Statistics: Picturing the World (7th E…](https://www.bartleby.com/isbn_cover_images/9780134683416/9780134683416_smallCoverImage.gif)
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
![The Basic Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319042578/9781319042578_smallCoverImage.gif)
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
![Introduction to the Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319013387/9781319013387_smallCoverImage.gif)
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman