A Professor Surveys a Sample of 25 Students to Find

question 21

Multiple Choice

A professor surveys a sample of 25 students to find how many hours per week they work at a job. She finds the typical number of hours reported is 15. The value of 15 hours is a(n) .

• A)parameter
• B)inference
• C)statistic
• D)estimate

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Definitions:

Neurons

Specialized cells in the nervous system that convey information to other neurons, muscles, or glands.

Acetylcholine

A neurotransmitter involved in many functions including muscle movement, heart rate, memory, and learning, playing a key role in the brain and body's nervous systems.

Catecholamines

Organic compounds that act as neurotransmitters or hormones, such as adrenaline and dopamine, involved in bodily responses to stress.

Nervous System

The network of nerve cells and fibers that transmits nerve impulses between parts of the body.