8) Twenty-nine college students identified as favorable toward a presidential candidate were asked on a scale of 0 to 7 to say how trustworthy they believed the candidate to be (0 being not at all trustworthy and 7 being extremely trustworthy). Below are their results in order from smallest to largest: 2.6 2.6 2.8 3.0 3.2 3.2 3.3 3.3 3.4 3.6 3.7 3.7 3.8 3.9 3.9 3.9 3.9 4.1 4.1 4.2 4.2 4.6 4.6 4.7 4.9 5.0 5.0 5.3 5.7 a) Suppose we can consider this as an SRS of all U.S. college students. Make a stemplot. Is there any sign of major deviation from Normalcy? b) Give a 95% confidence interval for the mean rating based on x-bar 3.938 and s,=0.802
8) Twenty-nine college students identified as favorable toward a presidential candidate were asked on a scale of 0 to 7 to say how trustworthy they believed the candidate to be (0 being not at all trustworthy and 7 being extremely trustworthy). Below are their results in order from smallest to largest: 2.6 2.6 2.8 3.0 3.2 3.2 3.3 3.3 3.4 3.6 3.7 3.7 3.8 3.9 3.9 3.9 3.9 4.1 4.1 4.2 4.2 4.6 4.6 4.7 4.9 5.0 5.0 5.3 5.7 a) Suppose we can consider this as an SRS of all U.S. college students. Make a stemplot. Is there any sign of major deviation from Normalcy? b) Give a 95% confidence interval for the mean rating based on x-bar 3.938 and s,=0.802
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
Transcribed Image Text:8) Twenty-nine college students identified as favorable toward a presidential candidate were asked on a scale of 0 to 7 to say how trustworthy they believed the
candidate to be (0 being not at all trustworthy and 7 being extremely trustworthy). Below are their results in order from smallest to largest:
2.6 2.6 2.8 3.0 3.2 3.2 3.3 3.3 3.4 3.6 3.7 3.7 3.8 3.9
3.9 3.9 3.9 4.1 4.1 4.2 4.2 4.6 4.6 4.7 4.9 5.0 5.0 5.3 5.7
a) Suppose we can consider this as an SRS of all U.S. college students. Make a stemplot. Is there any sign of major deviation from Normalcy?
b) Give a 95% confidence interval for the mean rating based on x-bar = 3.938 and s,= 0.802
Expert Solution
Step 1
Part a: Taking a stem of ones and leaves of one-tenths, the stem plot is
The data points seem to be nearly bell-shaped distributed, the stemplot does not show any sign of major deviation from normalcy.
Step by step
Solved in 2 steps
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
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