A psychologist is interested in whether the community a person lives in is related to that person's opinion on an upcoming ballot initiative. The psycholog surveys 99 people by phone with the results shown below. Is opinion related to community at the 0.05 level? Complete parts (a) and (b). Click the icon to view the table of cutoff scores for Community A Community B 12 9 13 3 14 12 the chi-square distribution. Click the icon to view the table of Cohen's conventions For Cramer's phi. For Against No Opinion w (a) Carry out the steps of hypothesis testing. Determine the null and research hypotheses. Choose the correct answer below. Community C 3 15 18 A. The null hypothesis is that the community and a person's opinion are independent. The research hypothesis is that the community and a person opinion are not independent. OB. The null hypothesis is that the community and a person's opinion are not independent. The research hypothesis is that the community and a person's opinion are independent. OC. The null hypothesis is that the percentage of people with each opinion is the same in each community. The research hypothesis is that the percentage of people with each opinion is different in at least one community. Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected. The cutoff sample score is Round to three decimal places as needed.) Cutoff Scores for the Chi-Square =
A psychologist is interested in whether the community a person lives in is related to that person's opinion on an upcoming ballot initiative. The psycholog surveys 99 people by phone with the results shown below. Is opinion related to community at the 0.05 level? Complete parts (a) and (b). Click the icon to view the table of cutoff scores for Community A Community B 12 9 13 3 14 12 the chi-square distribution. Click the icon to view the table of Cohen's conventions For Cramer's phi. For Against No Opinion w (a) Carry out the steps of hypothesis testing. Determine the null and research hypotheses. Choose the correct answer below. Community C 3 15 18 A. The null hypothesis is that the community and a person's opinion are independent. The research hypothesis is that the community and a person opinion are not independent. OB. The null hypothesis is that the community and a person's opinion are not independent. The research hypothesis is that the community and a person's opinion are independent. OC. The null hypothesis is that the percentage of people with each opinion is the same in each community. The research hypothesis is that the percentage of people with each opinion is different in at least one community. Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected. The cutoff sample score is Round to three decimal places as needed.) Cutoff Scores for the Chi-Square =
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
A psychologist is interested in whether the community a person lives in is related to that person's opinion on an upcoming ballot initiative. The psychologist surveys 99 people by phone with the results shown below. Is opinion related to community at the 0.05 level? Complete parts for A- C?include hypothesis testing, cutoff score
Transcribed Image Text:A psychologist is interested in whether the community a person lives in is related to that person's opinion on an upcoming ballot initiative. The psychologist
surveys 99 people by phone with the results shown below. Is opinion related to community at the 0.05 level? Complete parts (a) and (b).
Click the icon to view the table of cutoff scores for
Community A
Community B
12
19
13
3
14
the chi-square distribution.
Click the icon to view the table of Cohen's conventions
for Cramer's phi.
(a) Carry out the steps of hypothesis testing.
Determine the null and research hypotheses. Choose the correct answer below.
A. The null hypothesis is that the community and a person's opinion are independent. The research hypothesis is that the community and a person's
opinion are not independent.
OB. The null hypothesis is that the community and a person's opinion are not independent. The research hypothesis is that the community and
a person's opinion are independent.
phen's conventions for Cramer's phi
For
Against
No Opinion
OC. The null hypothesis is that the percentage of people with each opinion is the same in each community. The research hypothesis is that the
percentage of people with each opinion is different in at least one community.
Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected
The cutoff sample score is
(Round to three decimal places as needed.)
Cohen's Conventions for Cramer's Phi
GOD
Effect Size
Smallest Side of Contingency Table Small Medium Large
2 (dfsmaller = 1)
0.30
0.50
3 (dfsmaller = 2)
0.21 0.35
4 (dfsmaller = 3)
0.17 0.29
Print
0.07
0.06
Done
Cutoff Scores for the Chi-Square
Distribution
df
11
2
3
4
5
6
7
8
9
10
10
Community C
3
15
18
2.706
4.605
6.252
7.780
9.237
10.645
12.017
13.362
14.684
15.987
Significance Level
05
3.841
5.992
7.815
9.488
11.071
12.592
14.067
15.507
16.919
18.307
.01
6.635
9.211
11.345
13.277
15.087
16.812
18.475
20.090
21.666
23.209
- X
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