Homework Answers
1)
2)
since population parameter unknown
....
3)
two samples are independent of each other
......
4)
groups are paired by befor/afetr condition
.......
5)
..
6)
...............
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QUESTION 11 For each of the examples below decide which statistical test should be used to...
V V For each of the examples below decide which statistical test should be used to...
V V For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three A. Z-test levels with different participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't C.Single sample t-test know all of the population parameters D. Independent samples t-test One group of participants took medicine, another group E....
. propose a between-subjects experimental design to test the relationship. The IV and DV are already...
. propose a between-subjects experimental design to test the relationship. The IV and DV are already identified for you. Please explain how you would investigate the relationship by including: (1) your hypothesis (.e., what do you expect to happen), (2) an operational definition for your dependent variable (i.e., how will you test the variable), (3) the population (who do you want to recruit and why), (4) the levels of the IV (how many, what they are, and why), and (5)...
Dr. Money wanted to determine whether there were differences between men and women in terms of...
Dr. Money wanted to determine whether there were differences
between men and women in terms of the salaries that they earn. Dr.
Money will need to use what kind of t-test?
Question 1 options:
Between-subjects design t-test
Independent samples t-test
Two-sample t-test
In the PenCast, all of the terms were used to describe the
t-test appropriate for the scenario above
Within subjects t-test
Save
Question 2 (1 point)
Dr. Bowles wanted to explore change in brain volume following a
course...
For each example, identify the test or interval to be used. Then state and check (as...
For each example, identify the test or interval to be used. Then state and check (as far as possible) the conditions. 1. A researcher takes 200 males over the age of 50 and randomly divides them into 2 groups. Group A takes one aspirin tablet per day, and group B takes a placebo tablet each day. After one year, the researcher records whether or not each subject has had a cardiovascular event (heart attacks, strokes, etc). She wishes to test...
3 and 4 3. Indicate df for the following statistical tests: a. One sample t test...
3 and 4
3. Indicate df for the following statistical tests: a. One sample t test b. Independent samples t test (same N's in both groups) c. Independent samples t test (different N's) d. Paired samples t test e. Testing whether correlation coefficient is different from 0. 4. Assume you have two independent samples that you wish to compare. One sample has an N of 14 and the other has an N of 10. For a = .05, two tailed...
2. Identifying related samples Aa Aa E For each of the following research scenarios, decide whether...
2. Identifying related samples Aa Aa E For each of the following research scenarios, decide whether the design uses a related sample. If the design uses a related sample, identify whether it uses matched subjects or repeated measures. (Note: Researchers can match subjects by matching particular characteristics, or, in some cases, matched subjects are naturally paired, such as siblings or married couples.) Lorrin Koran has studied whether antidepressants are effective for treating kleptomania. Suppose that people with kleptomania typically score...
Subject bias can occur in an experiment when the participants are aware of the purpose of...
Subject bias can occur in an experiment when the participants are aware of the purpose of the study and respond in a way that they think the researchers want. For example, if participants believe they are in a study to test if coffee improves your mood, those who drank coffee might claim to be happier than they really are. Based on the information given, which of the following experiments is most likely to have the issue of a control or...
Consider each of the scenarios below. For each statement, decide which statistical procedure is most appropriate....
Consider each of the scenarios below. For each statement, decide which statistical procedure is most appropriate. One-sample hypothesis test for a single proportionOne-sample confidence interval for a single proportionTwo-sample hypothesis test for the difference in proportionsTwo-sample confidence interval for the difference in proportions Chi-square test for multiple categories of a single variable Chi-square test of independence of 2 categorical variables One-sample hypothesis test for a single mean One-sample confidence interval for a single mean Two-sample hypothesis test for the difference...
FINAL REVIEW: o Determine o a) Which test would you use (and why o b) The IV and DV o c) The scales of measure for the IV and DV o d) The two statistical hypotheses. o Researchers suspect that pe...
FINAL REVIEW: o Determine o a) Which test would you use (and why o b) The IV and DV o c) The scales of measure for the IV and DV o d) The two statistical hypotheses. o Researchers suspect that people are more trusting of eople that are considered very attractive by modern eauty standards. To test this, researchers have one group of participants (n- 35) watch an attractive politician give a speech and one group of participants (n -...
For each of the 3 following relationships, propose a within-subjects design that utilizes counterbalancing. • For...
For each of the 3 following relationships, propose a within-subjects design that utilizes counterbalancing. • For each relationship, please explain how you would investigate the relationship by including: 1. your hypothesis (i.e., what do you expect to happen), 2. an operational definition for your dependent variable (i.e., how will you test the variable), 3. the population (who do you want to recruit and why), 4. the levels of the IV (how many, what they are, and why), 5. your study...
V V For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three A. Z-test levels with different participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't C.Single sample t-test know all of the population parameters D. Independent samples t-test One group of participants took medicine, another group E....
. propose a between-subjects experimental design to test the relationship. The IV and DV are already identified for you. Please explain how you would investigate the relationship by including: (1) your hypothesis (.e., what do you expect to happen), (2) an operational definition for your dependent variable (i.e., how will you test the variable), (3) the population (who do you want to recruit and why), (4) the levels of the IV (how many, what they are, and why), and (5)...
Dr. Money wanted to determine whether there were differences
between men and women in terms of the salaries that they earn. Dr.
Money will need to use what kind of t-test?
Question 1 options:
Between-subjects design t-test
Independent samples t-test
Two-sample t-test
In the PenCast, all of the terms were used to describe the
t-test appropriate for the scenario above
Within subjects t-test
Save
Question 2 (1 point)
Dr. Bowles wanted to explore change in brain volume following a
course...
3 and 4
3. Indicate df for the following statistical tests: a. One sample t test b. Independent samples t test (same N's in both groups) c. Independent samples t test (different N's) d. Paired samples t test e. Testing whether correlation coefficient is different from 0. 4. Assume you have two independent samples that you wish to compare. One sample has an N of 14 and the other has an N of 10. For a = .05, two tailed...
2. Identifying related samples Aa Aa E For each of the following research scenarios, decide whether the design uses a related sample. If the design uses a related sample, identify whether it uses matched subjects or repeated measures. (Note: Researchers can match subjects by matching particular characteristics, or, in some cases, matched subjects are naturally paired, such as siblings or married couples.) Lorrin Koran has studied whether antidepressants are effective for treating kleptomania. Suppose that people with kleptomania typically score...
FINAL REVIEW: o Determine o a) Which test would you use (and why o b) The IV and DV o c) The scales of measure for the IV and DV o d) The two statistical hypotheses. o Researchers suspect that people are more trusting of eople that are considered very attractive by modern eauty standards. To test this, researchers have one group of participants (n- 35) watch an attractive politician give a speech and one group of participants (n -...
For each of the 3 following relationships, propose a within-subjects design that utilizes counterbalancing. • For each relationship, please explain how you would investigate the relationship by including: 1. your hypothesis (i.e., what do you expect to happen), 2. an operational definition for your dependent variable (i.e., how will you test the variable), 3. the population (who do you want to recruit and why), 4. the levels of the IV (how many, what they are, and why), 5. your study...
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