Question
In: Statistics and Probability
A researcher tests whether the political affliction of individuals is related to or independent of whether...
- A researcher tests whether the political affliction of individuals is related to or independent of whether they have positive views of the economy. The researcher records the political affiliations and economic viewpoints of 105 participants. (Affiliation: 1 = Democrat, 0 = Republican, Economy: 1 = Positive, 0 = Negative). Data: Affiliation: Democrat = 67, feel Economy is positive = 35, negative = 32. Affiliation: Republican = 20, feel Economy is positive = 20, negative = 18.
Solutions
orchestra answered 2 years agoRelated Solutions
A researcher tests whether homeownership (own, rent/other) is related to or independent of participants positive or...
A researcher tests whether homeownership (own, rent/other) is
related to or independent of participants positive or negative
views of the economy. The researcher records whether or not 105
participants own a home and whether their economic viewpoint is
positive or negative. The following table lists the observed
frequencies for this study. Conduct a chi-squared test for
independence at a .05 level of significance. Decide whether to
retain or reject the null hypothesis.
Positive
Negative
Own
35 32
67
Rent/Other 20
18 ...
A researcher tests whether job security and life satisfaction are related. In this study, he observes...
A researcher tests whether job security and life satisfaction
are related. In this study, he observes the following frequencies.
If he computes a test for independence at a .05 level of
significance, then what is the decision for this test?
Life Satisfaction
Yes
No
Job Security
Yes
14
10
No
12
9
21. What were the total number of participants?
22. What is the null hypothesis?
23. What is the research hypothesis?
24. What is the chi-square value?
25. What...
A political researcher wishes to know if political affiliation and age are related. He has collected...
A political researcher wishes to know if political affiliation
and age are related. He has collected data on 510510persons in
three age categories. Is there evidence that age and political
affiliation are related?
Age
Democrat
Republican
Independent
Total
18-31
66
74
34
174
32-51
66
59
36
161
52-68
68
75
32
175
Total
200
208
102
510
Step 2: Find the expected value for the number of democrats that
are 18-31 years old. Round your answer to one decimal...
A political researcher wishes to know if political affiliation and age are related. He has collected...
A political researcher wishes to know if political affiliation
and age are related. He has collected data on 380380 persons in
three age categories. Is there evidence that age and political
affiliation are related?
Age
Democrat
Republican
Independent
Total
1818-3131
4646
4949
2626
121121
3232-5151
5656
5555
3131
142142
5252-6868
4646
4646
2525
117117
Total
148148
150150
8282
380380
Copy Data
Step 4 of 8:
Find the value of the test statistic. Round your answer to three
decimal places
A researcher is interested in whether the number of years of formal education is related to...
A researcher is interested in whether the number of years of
formal education is related to a person's decision to never smoke,
continue to smoke, or quit smoking cigarettes. The data below
represent the smoking status by level of education for residents of
the United States 18 years or older from a random sample of 350
residents. Round all numeric answers to four decimal places.
Smoking Status Education Level Current Former Never Less than high
school 46 12 26 High...
A researcher tests whether 4 treatments for depression are different, and gets a significant value for...
A researcher tests whether 4 treatments for depression are
different, and gets a significant value for F. What can the
researcher conclude about differences between groups? What can the
researcher not conclude about differences between groups?
A researcher conducts an independent-measures study. One sample of individuals serves as a control group and...
A researcher conducts an independent-measures study. One sample
of individuals serves as a control group and another sample serves
as a treatment group. The researcher hypothesizes that the two
samples will be different on the dependent variable.
The data are as follows:
Control
Treatment
n = 6
n = 9
M = 56
M = 62
SS = 470
SS = 700
α = .05, two-tailed
a.) Following the steps of a hypothesis test, first determine
whether the two groups...
A researcher was curious about whether people’s attitudes are related to their behaviors. As a simple...
A researcher was curious about whether people’s attitudes are
related to their behaviors. As a simple experiment, the researcher
measured people’s attitudes and behaviors regarding housework.
On the attitude side, the researcher measured the level of
agreement on the statement “It is much better for everyone
involved in housework: strongly agree, agree, disagree, and
strongly disagree” On the behavioral side, the respondents are
asked to estimate how many hours of housework they do per week.
Based on your analysis of...
A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table...
A psychologist studying addiction tests whether cravings for
cocaine and relapse are independent. The following table lists the
observed frequencies in the small sample of people who use
drugs.
Obs. Freq.
Relapse
Yes
No
Cravings
Yes
21
10
31
No
7
18
25
28
28
N = 56
(a) Conduct a chi-square test for independence at a 0.05 level
of significance. (Round your answer to two decimal places.)
=
Decide whether to retain or reject the null hypothesis....
A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table...
A psychologist studying addiction tests whether cravings for
cocaine and relapse are independent. The following table lists the
observed frequencies in the small sample of people who use
drugs.
Obs. Freq.
Relapse
Yes
No
Cravings
Yes
21
13
34
No
6
16
22
27
29
N = 56
(a) Conduct a chi-square test for independence at a 0.05 level
of significance. (Round your answer to two decimal places.)
=
(b) Compute effect size using ϕ and Cramer's V.
Hint: Both...
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