Scores on a Test Are Normally Distributed with a Mean $P _ { 81 }$

question 69

Multiple Choice

Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11.7. Find $P _ { 81 }$ , which separates the bottom 81% from the top 19%.

• A) 0.291
• B) 66.6
• C) 73.5
• D) 0.88

---

Definitions:

Object Permanence

Piaget’s term for the understanding that a person or object still exists when out of sight.

Centration

In Piaget’s theory, the tendency of preoperational children to focus on one aspect of a situation and neglect others.

Socioeconomic Status

A measure of an individual's or family's economic and social position in relation to others, based on income, education, and occupation.

Deferred Imitation

Piaget’s term for reproduction of an observed behavior after the passage of time by calling up a stored symbol of it.