In Normally Distributed Data, What Is the Percentile Rank of Scores

question 19

Multiple Choice

In normally distributed data, what is the percentile rank of scores at z = 1.7?

• A) 43rd
• B) 96th
• C) 57th
• D) 4th

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Definitions:

Homeostasis

The process by which biological systems tend to maintain stability while adjusting to conditions that are optimal for survival.

Yerkes-Dodson Law

A theory that suggests there is an optimal level of arousal for the best performance on any task; too little or too much arousal can decrease performance.

REM

Rapid Eye Movement, a phase of sleep characterized by fast and random movement of the eyes, associated with dreaming.

NREM

Non-Rapid Eye Movement sleep, which is characterized by slower brain waves and serves as a period of rest and recovery for the body.