The normal distribution has a greater percentage of its area close to the mean and much less in the tails.
-Find the indicated IQ score. The graph depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test) . 
The shaded area under the curve is 0.5675.
Definitions:
Social Bonds
Connections among individuals in a society that foster trust, cooperation, and collective action.
Associate
To connect or link in one's mind; to relate one idea or concept with another.
Drive Theories
A group of theories in psychology that suggest humans are motivated by biological drives to achieve certain needs such as hunger or thirst.
Incentive Theories
Psychological models which suggest behavior is motivated by a desire for rewards and avoidance of punishments.
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