If the Sample Mean Difference Is 3 Points,which of the Following

question 55

Multiple Choice

If the sample mean difference is 3 points,which of the following sets of data would produce the largest value for Cohen's d?​

• A)​n = 10 for both samples and a pooled variance of 15
• B)​n = 20 for both samples and a pooled variance of 15
• C)​n = 30 for both samples and a pooled variance of 15
• D)​Cohen's d is the same for all three of the samples.

---

Definitions:

Circadian Theory

A concept pertaining to the biological processes that follow a roughly 24-hour cycle, affecting various physiological and psychological functions.

Alexander Borbely

A scientist known for his work on sleep research, particularly for developing the two-process model of sleep regulation.

Restorative Theory

A theory postulating that sleep is essential for restoring physiological and psychological functions.

Melatonin Theory

suggests that the hormone melatonin plays a crucial role in regulating sleep-wake cycles, mood, and possibly aging and immune functions.