Question 16 For a repeated-measures study comparing two treatment conditions, a
ID: 3127606 • Letter: Q
Question
Question 16
For a repeated-measures study comparing two treatment conditions, a researcher obtains Cohen’s d = 0.50 for a sample of n = 4 scores with a variance of s2 = 16. What is the value of the sample mean?
A. MD = 4
B. MD = 2
C. MD = 16
D. MD = 8
Question 17
The null hypothesis for a repeated-measures test states:
A. All of the other options are correct.
B. The overall sample will have a mean difference of MD = 0.
C. Each individual will have a difference score of D = 0.
D. The entire population will have a mean difference of mD = 0.
Question 18
A researcher reports t(12) = 2.86, p < .05 for a repeated-measures research study. How many individuals participated in the study?
A. n = 11
B. n = 25
C. n = 13
D. n = 24
Question 19
A research report describing the results from a repeated-measures study states: The data show no significant difference between the two treatments, t(10) = 1.65, p > .05. Based on this report, you can conclude that a total of ____ individuals participated in the research study .
A. 10
B. 11
C. 9
D. 12
Question 20
Compared to an independent-measures design, a repeated-measured study is more likely to find a significant effect because it reduces the contribution of variance due to ____.
A. MD
B. individual differences
C. the effect of the treatment
D. degrees of freedom
Explanation / Answer
16. B. MD = 2
17. D. The entire population will have a mean difference of mD = 0.
18. C. n = 13
19. B.11
20. B. individual differences