STATISTICS PSY480-What are the researcher’s independent and dependent variables
Question # 00438834
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Updated on: 12/08/2016 04:24 AM Due on: 12/08/2016
Final Examples and Practice Homework Assignments 26-28There are 15 Research examples in this handout. This assignment has three (3) separate homework
assignments: Homework 26 is examples 1-5; Homework 27 is examples 6-10; and Homework 28 is examples
11-15.
Each part will allow you to practice identifying the necessary information for the final. On the final, you will be
expected to answer the following questions:
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style Homework 26: 1. A researcher wants to know if people who do community service have higher levels of empathy than people
who do no community service (CS). Participants are divided into three groups: 10+ hours of CS, 1-10 hours of
CS, and no CS. Each participant completes a measure of empathy in which scores can range from 0-100.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
2. A research team has developed a new medication to treat ADHD. They think that their new medicine will
be more effective than the current medication. The team asks local doctors to do a study in which newly
diagnosed children with ADHD are matched with other children taking the current medication based on
symptoms and physical attributes of the children. The research team will then test all the children after one year to determine the effectiveness of the treatments with a standardized symptom score-sheet (scores can
range from 1-50).
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
3. Researchers constructed an experiment to determine if boys and girls express aggression differently.
Children were brought to the lab and placed into one of two conditions, physical aggression and verbal
aggression. The researchers then determined if boys and girls responded differently to the types of aggression.
The researchers expected that boys would respond to physical aggression with more negativity (1-10) than
boys who experienced verbal aggression, whereas girls would respond to verbal aggression more negatively
than girls who experienced physical aggression.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
4. A standardized test that assesses verbal abilities (scores range from 1-45) in the overall population in the
U.S. has a mean of 25 and a variance of 2.7. This test was administered to early stage Alzheimer’s patients to
determine if the standard test of verbal abilities could be used to detect symptoms of Alzheimer’s earlier than
the current assessment tools. 150 Alzheimer’s patients in the earliest stage of Alzheimer’s were administered
the standard verbal test to compare their scores to the general population.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)? a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
5. A research group is interested in determining if children of divorced parents related differently to authority
figures than children of non-divorced parents. They administer a measure of resistance to authority figures (110). A total number of 150 participants completed the measures (80 divorced and 70 non-divorced).
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
I have to do Homework 26; questions 1, 2, 3, 4, 5 in attached document.
assignments: Homework 26 is examples 1-5; Homework 27 is examples 6-10; and Homework 28 is examples
11-15.
Each part will allow you to practice identifying the necessary information for the final. On the final, you will be
expected to answer the following questions:
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style Homework 26: 1. A researcher wants to know if people who do community service have higher levels of empathy than people
who do no community service (CS). Participants are divided into three groups: 10+ hours of CS, 1-10 hours of
CS, and no CS. Each participant completes a measure of empathy in which scores can range from 0-100.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
2. A research team has developed a new medication to treat ADHD. They think that their new medicine will
be more effective than the current medication. The team asks local doctors to do a study in which newly
diagnosed children with ADHD are matched with other children taking the current medication based on
symptoms and physical attributes of the children. The research team will then test all the children after one year to determine the effectiveness of the treatments with a standardized symptom score-sheet (scores can
range from 1-50).
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
3. Researchers constructed an experiment to determine if boys and girls express aggression differently.
Children were brought to the lab and placed into one of two conditions, physical aggression and verbal
aggression. The researchers then determined if boys and girls responded differently to the types of aggression.
The researchers expected that boys would respond to physical aggression with more negativity (1-10) than
boys who experienced verbal aggression, whereas girls would respond to verbal aggression more negatively
than girls who experienced physical aggression.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
4. A standardized test that assesses verbal abilities (scores range from 1-45) in the overall population in the
U.S. has a mean of 25 and a variance of 2.7. This test was administered to early stage Alzheimer’s patients to
determine if the standard test of verbal abilities could be used to detect symptoms of Alzheimer’s earlier than
the current assessment tools. 150 Alzheimer’s patients in the earliest stage of Alzheimer’s were administered
the standard verbal test to compare their scores to the general population.
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)? a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
5. A research group is interested in determining if children of divorced parents related differently to authority
figures than children of non-divorced parents. They administer a measure of resistance to authority figures (110). A total number of 150 participants completed the measures (80 divorced and 70 non-divorced).
1. What are the researcher’s independent and dependent variables?
a. Independent=______________________________
b. Dependent=_______________________________
2. What are the null and alternative hypotheses (use the appropriate symbols not words)?
a. H0=__________________
b. H1=__________________
3. What is the appropriate test for the researcher to use?__________________
4. Why is that statistic appropriate?
If applicable to the specific test:
5. What are the test’s assumptions?
6. What are the test’s df?
7. What is the appropriate critical value?
8. If the research obtains a test statistic of ____ , would the researcher retain or reject H 0?
9. Should the researcher do any follow up tests or make any graphs/charts?
10. Interpret the findings in APA style
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Solution: STATISTICS PSY480-What are the researcher’s independent and dependent variables