Answered: Std. Std. Error Mean Deviation Mean…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A sociologist was interested in the decline of racial discrimination in a particular geographical region from the 1960s to present. The number discrimination cases in this area were counted in 1960, and the average number of discrimination cases back then was approximately 110. A random sample of cities was obtained this month in the same area, and the average number of discrimination cases was approximately 47. Is there enough evidence to suggest that discrimination has significantly declined since the 1960s?

Std.
Std. Error
Mean
Deviation
Mean
discrimination
25
47.4000
5.93717
1.18743
Test Value = 110
95% Confidence Interval of
the Difference
Sig. (2-
tailed)
Mean
Difference
df
Lower
Upper
discrimination
-52.719
24
.000
-62.60000
-65.0507
-60.1493

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