The Normal Distribution Has a Greater Percentage of Its Area

question 33

Multiple Choice

The normal distribution has a greater percentage of its area close to the mean and much less in the tails.
-Find the area of the shaded region. 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) .

• A) 0.4400
• B) 0.7486
• C) 0.6293
• D) 0.8051

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Definitions:

Concrete Operational

A stage in Piaget's theory of cognitive development, where children aged 7-11 years begin to think logically about concrete events.

Adolescence

The phase of transition in physical and mental growth happening typically from puberty to the age of legal maturity.

Growth Spurt

A rapid increase in growth, especially height and weight, often occurring during puberty.

Intellectual Growth

The development of mental faculties and acquisition of knowledge and understanding.