In a Sample of 20 Participants,a Researcher Estimates the 95

question 34

Multiple Choice

In a sample of 20 participants,a researcher estimates the 95% CI for a sample with a mean of M = 5.4 and an estimated standard error ( ) of 1.6.What is the lower confidence limit for this interval?

• A)2.1
• B)3.8
• C)7.0
• D)8.8

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Definitions:

Alpha Wave

A type of brainwave detected by an EEG that occurs when a person is relaxed, but alert, typically with closed eyes.

Sleep-Inducing Hormone

Melatonin, a hormone produced by the pineal gland that regulates sleep and wakefulness.

Melatonin

A chemical substance secreted by the pineal gland in reaction to lack of light, which controls the rhythm of sleeping and waking.

Serotonin

A neurotransmitter in the brain that plays key roles in stabilizing mood, feelings of well-being, and happiness.