15
10.8
4.2
17.64
1.633333
3
No
Independen
t
4
5.7
-1.7
2.89
0.507017
5
No
Republican
11
13.5
-2.5
6.25
0.462963
3.719019
8
5.991464
5
The p-value associated with the test for independence is 0.156. Since the p-value is greater
than the level of significance, 0.05, we cannot reject the null hypothesis of Independence.
4.
With regard to question 3, test for the independence of the response (Yes and No) and
party affiliation. Use α = .05.
Sol.
Term Limits
Degree of Freedom
2
Level of significance
0.95

Democrats
Independent
Republican
Yes
17
10
32
59
No
19
9
13
41
36
19
45
Respons
e
Party
Observed
Frequency
Expected
Frequenc
y
Differenc
e
Square
Chi
Values
Chi
Critical
P Value
Yes
Democrat
17
21.24
-4.24
17.977
6
0.846403
0.077630875
Yes
Independen
t
10
11.21
-1.21
1.4641
0.130606
6
Yes
Republican
32
26.55
5.45
29.702
5
1.1187382
No
Democrats
19
14.76
4.24
17.977
6
1.217994
6
No
Independen
t
9
7.79
1.21
1.4641
0.187946
1
No
Republican
13
18.45
-5.45
29.702
5
1.609891
6
5.1115801
5.991464
5
The p-value associated with the test for independence is 0.78. Since the p-value is greater
than the level of significance, 0.05, we cannot reject the null hypothesis of independence.
5.
Does it appear that there is broad support for change across all political lines? Explain.
Sol. As per the analysis there appears to a broad support for change across all political lines
with respect to more restrictions on lobbyists. Because there appears to be no relation
between the responses and the political parties that the respondents belong to.

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- Fall '13
- Fantseng
- Null hypothesis, Statistical hypothesis testing, Sol., standard normal table