Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a recent season, the population standard deviation of the yards per carry for all running backs was 1.34. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed 5.6 6.2 2.2 2.9 6.1 4.4 4.5 2.7 4.6 5.9 3.8 3.1 3.6 6.4 5.3 6.6 2.6 3.2 2.2 3.3 1.7 7.1 7.3 3.6 3.9 Which distribution should be used construct the confidence interval? O A. Use a normal distribution because n< 30, the data are normally distributed and o is unknown. O B. Use a normal distribution because a is known and the data are normally distributed. O c. Use a t-distribution because n<30 and o is unknown. O D. Use a t-distribution because n<30 and o is known. O E. Cannot use the standard normal distribution or the t-distribution because o is unknown, n<30, and the data are not normally distributed.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
icon
Concept explainers
Question

 

A)The 99​% confidence interval is

B)Neither distribution can be used to construct the confidence interval.

Interpret the results

 

6.2.38-T
Question Help
Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results.
In a recent season, the population standard deviation of the yards per carry for all running backs was 1.34. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed.
2.2
6.1
4.5
4.6
3.8
3.6
5.6
5.3
2.6
2.2
1.7
7.3
3.9
2.9
4.4
2.7
5.9
3.1
6.4
6.2
6.6
3.2
3.3
7.1
3.6
Which distribution should be used to construct the confidence interval?
A. Use a normal distribution because n< 30, the data are normally distributed and o is unknown.
B. Use a normal distribution because o is known and the data are normally distributed.
C. Use a t-distribution because n< 30 and o is unknown.
D. Use a t-distribution because n<30 and o is known.
O E. Cannot use the standard normal distribution or the t-distribution because o is unknown, n<30, and the data are not normally distributed.
Transcribed Image Text:6.2.38-T Question Help Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a recent season, the population standard deviation of the yards per carry for all running backs was 1.34. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed. 2.2 6.1 4.5 4.6 3.8 3.6 5.6 5.3 2.6 2.2 1.7 7.3 3.9 2.9 4.4 2.7 5.9 3.1 6.4 6.2 6.6 3.2 3.3 7.1 3.6 Which distribution should be used to construct the confidence interval? A. Use a normal distribution because n< 30, the data are normally distributed and o is unknown. B. Use a normal distribution because o is known and the data are normally distributed. C. Use a t-distribution because n< 30 and o is unknown. D. Use a t-distribution because n<30 and o is known. O E. Cannot use the standard normal distribution or the t-distribution because o is unknown, n<30, and the data are not normally distributed.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Points, Lines and Planes
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
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman