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

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Definitions:

Infant Nursery

A room in a house or facility specially designed and equipped for the care and accommodation of infants.

Egocentrism

The cognitive inability to understand or assume any perspective other than one's own, commonly observed in children during the preoperational stage of development.

Infantile Amnesia

The common inability of adults to remember the earliest years of their childhood, typically from birth until around 4 years of age.

Stranger Anxiety

Describes a developmental stage in infants and young children where they experience fear or distress around unfamiliar people.