Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins. The slower intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given to twins per week by their parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was recorded. The data (in hours) calculated the mean at 26.9. The standard deviation was found to be 14. Use this information to construct a 90% confidence interval for the mean attention time given to all twin boys by their parents. Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places. 22.67 < u < 30.13
Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins. The slower intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given to twins per week by their parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was recorded. The data (in hours) calculated the mean at 26.9. The standard deviation was found to be 14. Use this information to construct a 90% confidence interval for the mean attention time given to all twin boys by their parents. Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places. 22.67 < u < 30.13
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
See below. Note that the answers shown are incorrect. This is the same problem.
![Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins.
The slower intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given
to twins per week by their parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was
recorded. The data (in hours) calculated the mean at 26.9. The standard deviation was found to be 14. Use this information to construct a
90% confidence interval for the mean attention time given to all twin boys by their parents.
Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places.
22.67
<u < 30.13](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcfade4c2-a035-4a4d-9038-f055c2534328%2F385a2afc-55f6-47a0-8870-ece94cafcb3c%2F57ymanp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins.
The slower intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given
to twins per week by their parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was
recorded. The data (in hours) calculated the mean at 26.9. The standard deviation was found to be 14. Use this information to construct a
90% confidence interval for the mean attention time given to all twin boys by their parents.
Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places.
22.67
<u < 30.13
![Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins. The slower
intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given to twins per week by their
parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was recorded. The data (in hours) calculated the
mean at 26.9. The standard deviation was found to be 14. Use this information to construct a 90% confidence interval for the mean attention time given
to all twin boys by their parents.
Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places.
23.259
< µ < 30.541](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcfade4c2-a035-4a4d-9038-f055c2534328%2F385a2afc-55f6-47a0-8870-ece94cafcb3c%2F4wddqca_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Studies have suggested that twins, in their early years, tend to have lower IQs and pick up language more slowly than nontwins. The slower
intellectual growth might be caused by benign parental neglect. Suppose it is desired to estimate the mean attention time given to twins per week by their
parents. A sample of 40 sets of 2 year old boys is taken, and after 1 week the attention time received was recorded. The data (in hours) calculated the
mean at 26.9. The standard deviation was found to be 14. Use this information to construct a 90% confidence interval for the mean attention time given
to all twin boys by their parents.
Use at least 3 decimal places for your critical value, and give your answers to at least 2 decimal places.
23.259
< µ < 30.541
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.
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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