Joe Has Collected Data on the Number of Hours Ten-Year-Olds

question 27

Multiple Choice

Joe has collected data on the number of hours ten-year-olds spend watching television each week.He tells you that the distribution of scores followed a truly normal curve.Which of the following is suggested by Joe's statement?

• A) Fifty percent of the scores fall below the mean.
• B) The mean, median, and mode are all different.
• C) Sixty percent of the scores fall within one standard deviation above and below the mean.
• D) Ten percent of the scores fall two standard deviations above the mean.

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Definitions:

Nervous System

A complex network of nerve cells and fibers that transmits nerve impulses between parts of the body, facilitating response to stimuli.

Cardiovascular System

The closed circulatory system of vertebrates that transports oxygen, nutrients, hormones, and other substances, and protects the body against disease; consists of heart and blood vessels.

Intercalated Disks

Specialized structures in cardiac muscles that facilitate the transmission of electrical signals and coordination of contraction.

Gap Junctions

Specialized intercellular connections that allow for direct chemical and electrical communication between cells.