A Study Compares the Means of Two Groups, Each Having

question 22

Multiple Choice

A study compares the means of two groups, each having N = 10. If the standard deviations in the two groups are 4.00 and 6.00, what is the value for the standard error of the difference ?

• A) 2.28
• B) 1.00
• C) 10.00
• D) 5.20

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Definitions:

Alpha Waves

Brain waves detected by an EEG that indicate a state of relaxation or light meditation, typically with a frequency of 8-12 Hz.

Delta Waves

Slow brain waves typically associated with the deep sleep stage, aiding in healing and regeneration of the body.

Beta Waves

A pattern of brain wave activity associated with active, alert cognition and wakefulness.

Theta Waves

Low-frequency brainwaves that are primarily associated with sleep, deep relaxation, and meditation.