In a T Test for Dependent Samples That Examines the Difference

question 1

Multiple Choice

In a t test for dependent samples that examines the difference between a pretest and posttest,what type of hypothesis is used?

• A)nondirectional
• B)directional
• C)null hypothesis
• D)experimental

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Definitions:

Pineal Gland

A small, pea-shaped gland in the brain that produces and regulates some hormones, including melatonin, which affects the sleep cycle.

Melatonin

A hormone produced by the pineal gland, regulating sleep and wakefulness.

Bright Light

Involves the exposure to intense levels of light, often used as a treatment modality for certain disorders such as seasonal affective disorder.

Circadian Rhythm

The physical, mental, and behavioral changes that follow a 24-hour cycle, responding primarily to light and darkness in an organism's environment.