Answered: A survey was carried out using random…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter4: Writing Linear Equations

Section: Chapter Questions

Problem 14CR

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A survey was carried out using random samples of respondents from each of the five countries.
Respondents were asked the following question: How satisfied are you with your overall life?
The results ranged from 1 (very dissatisfied) to 10 (very satisfied).
Perform a test to find out the significance difference in mean scores for each nation between men and women.

From above problem, show the following in:
a. State the null and alternative hypotheses, and the level of significance.
b. Find the critical value(s).
c. Compute the test value.
d. Make the decision.
e. Summarize the results

South Africa
Males
Females
X, = 6.8
s, = 2.5
N, = 1492
X, = 7.2
%3D
%3D
S = 2.3
N = 1482
%3D
Egypt
Males
Females
X, = 5.6
X, = 5.9
%3D
%3D
S = 2.7
N = 1493
S, = 2.7
N, =
= 1557

Brazil
Males
Females
X, = 7.7
X, = 7.6
%3D
S, = 2.0
N, = 712
S, = 2.2
N, = 783
%3D
%3D
%3D
Ukraine
Males
Females
X, = 5.8
s, = 2.3
N, = 446
= 5.5
%3D
S = 2.4
N = 549
%3D
Vietnam
Males
Females
X, = 7.2
s, = 1.9
N, = 762
X, = 7.0
%3D
S2 = 1.8
N = 720
%3D
%3D
%3!

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