Answered: A random sample of 800 adults was…

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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A random sample of 800 adults was asked: “Do you believe current sentencing laws for non-violent crimes are too lenient, too strict, or just right?” The polling company compiled the data and separated the respondents by their education level. Is there evidence that opinion about sentencing laws for non-violent crimes is related to education level

a. Write appropriate hypotheses and check conditions.

b.Suppose the expected counts had not been given. Show how to calculate the expected count in the first cell (106.01).

c.How many degrees of freedom?

d.State your complete conclusion in context.

Strict
Lenient
Right
182
Total
High school
93
107
382
106.01
87.38
188.61
2-year
27
19
56
102
28.31
23.33
50.36
4-year
82
50
140
272
75.48
62.22
134.30
Adv. degree
20
7
17
44
12.21
10.07
21.73
Total
222
183
395
800
x =
1.60 + 4.40 + 0.23 +
0.06 + 0.80 + 0.63 +
0.56 + 2.40 + 0.24 +
4.97 + 0.93 + 1.03 = 17.86
P = 0.0066

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