If a Test Has a Mean of 500 and a Standard

question 4

Essay

If a test has a mean of 500 and a standard deviation of 50 (and is normally distributed), what score marks the 15^th percentile?
a. On this same test, what proportion of students would be expected to receive scores between 475 and 550?
b. What scores fall at the extreme 10% of this distribution (two-tailed)?

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Definitions:

Ego Identity

Erikson’s term for a firm sense of who one is and what one stands for.

Ego

The part of the psyche that mediates between the conscious, the unconscious, and the reality to maintain a sense of personal identity and control.

Moral Principle

A fundamental belief or value that guides behavior and decision-making based on notions of right and wrong.

Cross-Cultural Research

A research methodology that studies human behavior across different cultures to understand the impact of culture on behavior.