Approximately How Many Research Participants Would Be Required for 80

question 41

Multiple Choice

Approximately how many research participants would be required for 80% power for a study using the t test for dependent means (assume a one-tailed hypothesis with an expected medium effect size of .50) :

• A)12
• B)26
• C)33
• D)196

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Definitions:

Parasympathetic Nervous System

The part of the autonomic nervous system responsible for rest and digestion, often counterbalancing the sympathetic nervous system's "fight or flight" response.

Midbrain

A portion of the brainstem involved in vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.

Hindbrain

The rear division of the brain, responsible for regulating basic life functions such as heart rate and respiration, and coordination of movement.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people outside of the experimental conditions.