Question

A social researcher is interested in studying the relationship between racial bias and political party affiliation. A sample of voters were given an implicit bias test with higher scores indicating more implicit, racial bias. Use an ANOVA to analyze her data. Republicans Independents Democrats 8 6 4 7 3 2 6 6 1 8 3 3 5 4 5 7 2 2 9 5 4 3 8 6 4 7 2 5 4 2 Answer the following questions.

1. What are the sample mean racial implicit bias levels for the three groups? 2. What is the F-statistic? 3. Are the differences in means statistically significant if alpha=0.05? 4. Do you accept or reject the null hypothesis? 5. Using the results of ANOVA, explain the differences, if any, among the groups. Use statistics to support your statements. Write formal sentences to explain your findings.

Answer #1

A sociologist wanted to determine whether there are
statistically significant differences between peoples political
party affiliation and their attitudes towards welfare. Independent
samples of Democrats and Republicans were drawn at random and
administered an attitude scale (ranged from 0 to 10, where 10 was
the most favorable attitude).
Mean
Standard Deviation
n
Democrats
8.14
2.19
7
Republicans
5.71
2.81
7
Use this information to answer questions #2 - 5.
Question 2
What is t? (round to the thousandths)
Question 3...

The data below represents the gender and political affiliation
of 100 randomly selected voters at a voting site. Suppose you
select a voter at random from this sample. Answer the following
questions.
Women
Men
Republicans
22
28
Democrats
23
14
Independents
5
8
1. What is the probability that you select a man? Use
cell references to find your answers.
a.Number of Men
b.Total Number of Voters
c.Probability of Selecting a Man
2. What is the probability of selecting a...

Political party affiliation is believed to be a very strong
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are interested in determining if voter party loyalty has changed
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self-proclaimed Republicans who voted for George H. W. Bush was
0.893. During the 2012 election, in a survey of 264 Republican
voters, 198 indicated that they had voted for Mitt Romney. The 99%
confidence interval for this proportion is ( 0.6814...

Political party affiliation is believed to be a very strong
indicator of how voters will vote in Presidential Elections. You
are interested in determining if voter party loyalty has changed
since 1992. During the 1992 election, the proportion of
self-proclaimed Republicans who voted for George H. W. Bush was
0.914. During the 2012 election, in a survey of 358 Republican
voters, 275 indicated that they had voted for Mitt Romney. The 99%
confidence interval for this proportion is ( 0.7107...

3. Many members of social media outlets like Facebook lament the
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was interested to see if Facebook use varied based on an
individual’s political affiliation. Specifically, he wanted to know
if the average number of logins to Facebook per day varied among
the various political groups. To this end, he created a survey
where he asked people to indicate...

A political scientist wanted to learn whether there is an
association between the education level of registered voters and
his or her political party affiliation. He randomly selected 46
registered voters and ran a Chi-square test of Independence and
Homogeneity in SPSS. The following is the test result from
SPSS:
Education * Party Crosstabulation
Party
Total
Democrat
Republican
Education
College
Count
9
12
21
Expected Count
11.9
9.1
21.0
Grade School
Count
7
2
9
Expected Count
5.1
3.9
9.0...

A researcher is interested to learn if there is a relationship
between the level of interaction a women in her 20s has with her
mother and her life satisfaction ranking. Below is a list of women
who fit into each of four level of interaction. Conduct a One-Way
ANOVA on the data to determine if a relationship exists.
No Interaction
Low Interaction
Moderate Interaction
High Interaction
2
3
3
9
4
3
10
10
4
5
2
8
4
1...

A researcher is interested to learn if the level of interaction
a women in her 20s has with her mother influences her life
satisfaction ratings. Below is a list of women who fit into each of
four levels of interaction. Conduct a One-way ANOVA on the data to
determine if there are differences between groups; does the level
of interaction influence women’s ratings of life satisfaction?
Report the results of the One-way ANOVA. If significance is found,
run the appropriate...

A researcher is interested in studying the effect that the
amount of fat in the diet and amount of exercise has on the mental
acuity of middle-aged women. The researcher used three different
treatment levels for the diet and two levels for the exercise. The
results of the acuity test for the subjects in the different
treatment levels are shown below.
Diet
Exercise
<30% fat
30% - 60% fat
>60% fat
<60 minutes
4
3
2
4
1
2
2...

An investigator studied the relationship between anxiety and
school achievement. The researcher selected a random sample of 15
fifth-grade students, all aged 10 years. Each student was given an
anxiety test (high scores indicating high anxiety) and these
measures were paired with the student's score on an academic
achievement test (high score indicating high achievement). The data
are as follows:
Anxiety
Score Achievement
Score
10
2
8
4
9
6
7
5
9
3
5 ...

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