1. From the output, what is the average percent of heavy drinkers in Obama states? What is the average percent of heavy drinkers in McCain states? 2. The test statistic is labeled “t” in the Independent Samples Test table. For now, we are going to use the “Equal Variances not assumed” row in this table. The calculated degrees of freedom is “df” in the table, and the p-value is labeled “Sig. (2-tailed). What are the test statistic, degrees of freedom, and the p-value?

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

Next, we will examine an entirely different question. Do the states that voted for McCain have a different average percent of heavy drinkers than the states that voted for Obama in the 2008 election. 

1. From the output, what is the average percent of heavy drinkers in Obama states? What is the average percent of heavy drinkers in McCain states?

2. The test statistic is labeled “t” in the Independent Samples Test table. For now, we are going to use the “Equal Variances not assumed” row in this table. The calculated degrees of freedom is “df” in the table, and the p-value is labeled “Sig. (2-tailed). What are the test statistic, degrees of freedom, and the p-value?

T-Test
[DataSet2] W:\syr\CourseInformation\MTH 112\dilmore\USstates.sav
Group Statistics
ObamaMcCain
N
Mean
Std. Deviation Std. Error Mean
HeavyDrinkers M
22
4.255
1.0060
.2145
28
5.446
1.1154
.2108
Independent Samples Test
Levene's Test for Equality of
t-test for Equality of
Means
Variances
F
Sig.
df
HeavyDrinkers Equal variances assumed
.045
.832
-3.914
48
Equal variances not
-3.963
47.031
assumed
Transcribed Image Text:T-Test [DataSet2] W:\syr\CourseInformation\MTH 112\dilmore\USstates.sav Group Statistics ObamaMcCain N Mean Std. Deviation Std. Error Mean HeavyDrinkers M 22 4.255 1.0060 .2145 28 5.446 1.1154 .2108 Independent Samples Test Levene's Test for Equality of t-test for Equality of Means Variances F Sig. df HeavyDrinkers Equal variances assumed .045 .832 -3.914 48 Equal variances not -3.963 47.031 assumed
Independent Samples Test
t-test for Equality of Means
Mean
Std. Error
Sig. (2-tailed)
Difference
Difference
HeavyDrinkers Equal variances assumed
.000
-1.1919
.3045
Equal variances not
.000
-1.1919
.3007
assumed
Independent Samples Test
t-test for Equality of Means
95% Confidence Interval of the
Difference
Lower
Upper
HeavyDrinkers Equal variances assumed
-1.8042
-.5796
Equal variances not
-1.7969
-.5869
assumed
Transcribed Image Text:Independent Samples Test t-test for Equality of Means Mean Std. Error Sig. (2-tailed) Difference Difference HeavyDrinkers Equal variances assumed .000 -1.1919 .3045 Equal variances not .000 -1.1919 .3007 assumed Independent Samples Test t-test for Equality of Means 95% Confidence Interval of the Difference Lower Upper HeavyDrinkers Equal variances assumed -1.8042 -.5796 Equal variances not -1.7969 -.5869 assumed
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Equality of Variances
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.
Similar 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