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If the mean of a population is 25, which of the following is not a correctly stated alternative hypothesis for a z-test?
REM Sleep
A stage of sleep characterized by rapid eye movements, more vivid dreams, and increased brain activity, thought to play important roles in learning and memory processes.
Postural Muscles
Muscles that are used to maintain posture and balance, particularly those in the back, neck, and abdomen.
Rapid Eye
Often associated with the rapid eye movement (REM) phase of sleep, characterized by quick movements of the eyes under closed eyelids, typically associated with vivid dreaming.
Dreams
A series of thoughts, images, and sensations occurring in a person's mind during sleep.
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