6. How long does it take to commute from home to work? It depends on several factors including route, traffic, and time of departure. The data below are approximately normally distributed results (in minutes) from a random sample of 8 trips. 27 38 30 42 24 37 30 39 a. Explain how you determined your data was normally distributed. b. Using technology, determine the sample mean and sample standard deviation for this data. Round your answers to three decimal places. c. Use these data to create a 95% confidence interval for the population mean time of the commute. d. Interpret your interval in the context of the problem.
6. How long does it take to commute from home to work? It depends on several factors including route, traffic, and time of departure. The data below are approximately normally distributed results (in minutes) from a random sample of 8 trips. 27 38 30 42 24 37 30 39 a. Explain how you determined your data was normally distributed. b. Using technology, determine the sample mean and sample standard deviation for this data. Round your answers to three decimal places. c. Use these data to create a 95% confidence interval for the population mean time of the commute. d. Interpret your interval in the context of the problem.
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
question 6 a-c
Transcribed Image Text:b. Express your conclusion using a complete sentence or sentences.
T-Distribution Intervals
5. Confidence intervals are designed to predict where the population mean will fall. What is
the reason that we need two different distributions (Z and T) for this process?
6. How long does it take to commute from home to work? It depends on several factors
including route, traffic, and time of departure. The data below are approximately
normally distributed results (in minutes) from a random sample of 8 trips.
27
38
30
42
24
37
30
39
a. Explain how you determined your data was normally distributed.
b. Using technology, determine the sample mean and sample standard deviation for
this data. Round your answers to three decimal places.
c. Use these data to create a 95% confidence interval for the population mean time
of the commute.
d. Interpret your interval in the context of the problem.
7. The fuel economy sticker on a new SUV's window sticker indicates the owner can expect
W
N
25
MacBook Air
Expert Solution
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 3 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman