A Population Has a Standard Deviation of 25

question 60

Multiple Choice

A population has a standard deviation of 25. A random sample of 125 items from this population is selected. The sample mean is determined to be 325. At 95% confidence, the margin of error is

• A) 2.24.
• B) 5.
• C) 4.38.
• D) 11.18.

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Definitions:

NREM III

The third stage of non-rapid eye movement sleep, characterized by deep sleep and the presence of delta waves in brain activity, important for physical recovery and memory consolidation.

Deep Sleep

A stage of sleep characterized by slow brain waves, lack of muscle activity, and reduced sensory perception, essential for restorative rest.

Confused

The state of being unable to think clearly or understand what is happening, often resulting in disorientation or difficulty in making decisions.

Sympathetic Nervous System

Part of the autonomic nervous system that prepares the body for action by triggering the fight or flight response.