Find the Z-Score Corresponding to the Given Value and Use

question 46

Multiple Choice

Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual.
Consider a score to be unusual if its z-score is less than -2.00 or greater than 2.00. Round the z-score to the nearest tenth
if necessary.
-A time for the 100 meter sprint of 20.0 seconds at a school where the mean time for the 100 meter sprint is 17.7 seconds and the standard deviation is 2.1 seconds.

• A)2.3; unusual
• B)1.1; not unusual
• C)1.1; unusual
• D)-1.1; not unusual

---

Definitions:

Agoraphobia

An anxiety disorder that involves an extreme or irrational fear of entering open or crowded places, leaving one's own home, or being in places from which escape might be difficult.

Natural Environment Type Phobia

Anxiety disorders characterized by excessive fear of specific natural environments or situations.

Cortisol Levels

The concentration of cortisol, a hormone produced by the adrenal glands, which increases in response to stress and low blood-glucose concentration.

Hippocampus

A region of the brain that is associated with the formation of memories and navigation.