The figure shows the results of a recent Marist poll asking about President Biden’s approval rating. The range of the confidence interval for these data points is 4.3%. For example, the first row shows that among all adults in the nations, 42% approve of Biden’s work. This means that confidence intervals

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
Question
  1. The figure shows the results of a recent Marist poll asking about President Biden’s approval rating. The range of the confidence interval for these data points is 4.3%. For example, the first row shows that among all adults in the nations, 42% approve of Biden’s work. This means that confidence intervals for this result would be approximately (38, 46).

a. The figure shows that people with less income are more likely to approve of Biden’s work than people with higher income. Is this result statistically significant given the width of the confidence interval? Explain.

BIDJP105. NPR/Marist Poll National Tables November 16th through November 19th, 2021
National Adults
Do you approve or disapprove of the job Joe Biden is
doing as president?
Approve
Disapprove
Vol: Unsure
Row %
Row %
Row %
National Adults
42%
50%
8%
National Registered Voters
43%
50%
7%
Party Identification
Democrat
81%
10%
9%
Republican
3%
93%
4%
Independent
44%
49%
7%
Region
Northeast
50%
44%
6%
Midwest
44%
49%
7%
South
35%
56%
9%
West
45%
47%
9%
Household Income
Less than $50,000
42%
48%
10%
$50,000 or more
41%
53%
7%
Education
Not college graduate
39%
55%
7%
College graduate
47%
44%
9%
Race/Ethnicity
White
36%
55%
9%
Non-white
52%
42%
6%
Race and Education
White - Not College Graduate
28%
61%
10%
White - College Graduate
46%
46%
7%
Gender - Race - Education
Men - White - Not College
22%
69%
8%
Graduate
Men - White - College
40%
55%
5%
Graduate
Women - White - Not College
33%
55%
12%
Graduate
Women - White - College
Graduate
55%
35%
10%
Age
Under 45
39%
50%
12%
45 or older
44%
51%
5%
Generation
Gen Z/Millennials (18-40)
40%
49%
11%
Gen X (41-56)
38%
55%
7%
Baby Boomers (57-75)
46%
49%
5%
Silent-Greatest (Over 75)
46%
47%
7%
Gender
Men
36%
58%
6%
Women
48%
43%
10%
White Evangelical Christians
21%
72%
7%
2020 Support
Biden
81%
10%
9%
Trump
2%
96%
2%
Area Description
Big city
49%
45%
6%
Small city
42%
48%
10%
Suburban
44%
46%
10%
Small town
34%
59%
8%
Rural
37%
57%
6%
Small city/Suburban Men
37%
56%
7%
Small city/Suburban Women
49%
39%
12%
NPR/Marist Poll National Adults. Interviews conducted November 16th through November 19th, 2021. Totals may not add
to 100% due to rounding.
Transcribed Image Text:BIDJP105. NPR/Marist Poll National Tables November 16th through November 19th, 2021 National Adults Do you approve or disapprove of the job Joe Biden is doing as president? Approve Disapprove Vol: Unsure Row % Row % Row % National Adults 42% 50% 8% National Registered Voters 43% 50% 7% Party Identification Democrat 81% 10% 9% Republican 3% 93% 4% Independent 44% 49% 7% Region Northeast 50% 44% 6% Midwest 44% 49% 7% South 35% 56% 9% West 45% 47% 9% Household Income Less than $50,000 42% 48% 10% $50,000 or more 41% 53% 7% Education Not college graduate 39% 55% 7% College graduate 47% 44% 9% Race/Ethnicity White 36% 55% 9% Non-white 52% 42% 6% Race and Education White - Not College Graduate 28% 61% 10% White - College Graduate 46% 46% 7% Gender - Race - Education Men - White - Not College 22% 69% 8% Graduate Men - White - College 40% 55% 5% Graduate Women - White - Not College 33% 55% 12% Graduate Women - White - College Graduate 55% 35% 10% Age Under 45 39% 50% 12% 45 or older 44% 51% 5% Generation Gen Z/Millennials (18-40) 40% 49% 11% Gen X (41-56) 38% 55% 7% Baby Boomers (57-75) 46% 49% 5% Silent-Greatest (Over 75) 46% 47% 7% Gender Men 36% 58% 6% Women 48% 43% 10% White Evangelical Christians 21% 72% 7% 2020 Support Biden 81% 10% 9% Trump 2% 96% 2% Area Description Big city 49% 45% 6% Small city 42% 48% 10% Suburban 44% 46% 10% Small town 34% 59% 8% Rural 37% 57% 6% Small city/Suburban Men 37% 56% 7% Small city/Suburban Women 49% 39% 12% NPR/Marist Poll National Adults. Interviews conducted November 16th through November 19th, 2021. Totals may not add to 100% due to rounding.
Expert Solution
steps

Step by step

Solved in 3 steps

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
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