Name: 5. Driving Distance In a random sample of nine people, the mean driving distance to work was 21.2 miles and the standard deviation was 4.2 miles. Assume that the population is normally distributed. a. O Construct a 95% confidence interval for the mean. Write your answer as an inequality, ncluding units. tc = X-a1.2 ertical value for K=0.05 df=nl 9-1=8 6:4.2 %3D when The ipe Iis ac Typs i en p. O) Suppose you researched commute distances and found the population standard deviation to be 4.2 miles. In general, if you used this new value to create a confidence interval, would you expect vidth of the confidence interval to be bigger or smaller? Why?

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
Please help me solve on a ti 84 plus calculator
Name:
5. Driving Distance In a random sample of nine people, the mean driving distance to work was 21.2 miles
and the standard deviation was 4.2 miles. Assume that the population is normally distributed.
a. ) Construct a 95% confidence interval for the mean. Write your answer as an inequality,
X-a1.2 enitical value for K=0.05 dfancl
9-1-8
including units.
6:4.2
tc =
when
The tpe
Type i
b. O) Suppose you researched commute distances and found the population standard deviation to
also be 4.2 miles. In general, if you used this new value to create a confidence interval, would you expect
the width of the confidence interval to be bigger or smaller? Why?
Transcribed Image Text:Name: 5. Driving Distance In a random sample of nine people, the mean driving distance to work was 21.2 miles and the standard deviation was 4.2 miles. Assume that the population is normally distributed. a. ) Construct a 95% confidence interval for the mean. Write your answer as an inequality, X-a1.2 enitical value for K=0.05 dfancl 9-1-8 including units. 6:4.2 tc = when The tpe Type i b. O) Suppose you researched commute distances and found the population standard deviation to also be 4.2 miles. In general, if you used this new value to create a confidence interval, would you expect the width of the confidence interval to be bigger or smaller? Why?
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Fundamentals of Algebraic Equations
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