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.

---

Definitions:

Epinephrine

A hormone and neurotransmitter also known as adrenaline, involved in the body's fight-or-flight response to stress.

Lymphocytes

A subtype of white blood cells that play an integral role in the body's immune response.

Carcinogens

Substances that are known to cause cancer in living tissue.

Serotonin

A neurotransmitter that plays a role in mood regulation, digestion, sleep, and other bodily functions.