Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c= 0.95, x=14.1, s=4.0, n=7 (Round to one decimal place as needed.)
Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. c= 0.95, x=14.1, s=4.0, n=7 (Round to one decimal place as needed.)
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
Topic Video
Question
![### Constructing a Confidence Interval
To construct the indicated confidence interval for the population mean \( \mu \) using the t-distribution, follow these parameters and assumptions:
**Parameters:**
- Confidence level (\( c \)): 0.95
- Sample mean (\( \bar{x} \)): 14.1
- Sample standard deviation (\( s \)): 4.0
- Sample size (\( n \)): 7
**Assumptions:**
- The population is normally distributed.
**Instructions:**
1. Use the confidence interval formula for the mean with the t-distribution:
\[
\bar{x} \pm t^* \left(\frac{s}{\sqrt{n}}\right)
\]
where \( t^* \) is the t-score for the desired confidence level and degrees of freedom (\( n-1 \)).
2. Calculate the degrees of freedom:
\[
df = n - 1 = 6
\]
3. Look up the t-score for a 95% confidence level with 6 degrees of freedom.
4. Compute the margin of error:
\[
ME = t^* \left(\frac{s}{\sqrt{n}}\right)
\]
5. Calculate the confidence interval:
\[
\left(\bar{x} - ME, \bar{x} + ME\right)
\]
**Answer:**
Enter your computed confidence interval in the fields provided and click "Check Answer."
**Note:**
Round your final results to one decimal place as needed.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc68fb9d8-8082-44df-a841-c641eaf26b16%2F0fe00c69-4c39-4a15-932d-459f2e96163c%2F1cl504h_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Constructing a Confidence Interval
To construct the indicated confidence interval for the population mean \( \mu \) using the t-distribution, follow these parameters and assumptions:
**Parameters:**
- Confidence level (\( c \)): 0.95
- Sample mean (\( \bar{x} \)): 14.1
- Sample standard deviation (\( s \)): 4.0
- Sample size (\( n \)): 7
**Assumptions:**
- The population is normally distributed.
**Instructions:**
1. Use the confidence interval formula for the mean with the t-distribution:
\[
\bar{x} \pm t^* \left(\frac{s}{\sqrt{n}}\right)
\]
where \( t^* \) is the t-score for the desired confidence level and degrees of freedom (\( n-1 \)).
2. Calculate the degrees of freedom:
\[
df = n - 1 = 6
\]
3. Look up the t-score for a 95% confidence level with 6 degrees of freedom.
4. Compute the margin of error:
\[
ME = t^* \left(\frac{s}{\sqrt{n}}\right)
\]
5. Calculate the confidence interval:
\[
\left(\bar{x} - ME, \bar{x} + ME\right)
\]
**Answer:**
Enter your computed confidence interval in the fields provided and click "Check Answer."
**Note:**
Round your final results to one decimal place as needed.
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
![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