Approximately What Percentile Is Associated with a Score Located One

question 20

Multiple Choice

Approximately what percentile is associated with a score located one standard deviation below the mean in a normal distribution?

• A) 40
• B) 35
• C) 22
• D) 16
• E) Not possible to determine from information given.

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Definitions:

Insomnia

A common sleep disorder characterized by trouble falling or staying asleep, resulting in insufficient or non-restorative sleep.

Narcolepsy

A persistent sleeping condition marked by excessive sleepiness during the day and abrupt sleep onset episodes.

REM Sleep

A sleep phase characterized by rapid eye movement, during which vivid dreams commonly occur. This stage is associated with increased brain activity.

Sleep Apnea

A sleep disorder characterized by pauses in breathing or periods of shallow breathing during sleep.