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Instruction 3-4
The ordered array below represents the number of cargo manifests approved by customs inspectors at the Port
of Brisbane in a sample of 35 days.
16, 17, 18, 18, 19, 20, 20, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23, 24, 24, 24, 25, 25, 26, 26, 26, 27, 28, 28, 29, 29, 31, 31, 32, 32
Note: For this sample, the sum of the observations is 838, the sum of the squares of the observations is 20,684, and the sum of the squared differences between each observation and the mean is 619.89.
-Referring to Instruction 3-4,the variance of the customs data is _____________ .
REM Sleep
REM sleep is a stage of sleep characterized by rapid eye movements, increased brain activity, vivid dreaming, and temporary paralysis of the muscles.
Narcolepsy
A chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep.
Jet Lag
A physiological condition resulting from alterations to the body's circadian rhythms caused by rapid long-distance transmeridian travel.
Sleep Spindles
Sudden bursts of oscillatory brain activity visible on an EEG that occur during stage 2 sleep, associated with learning, memory consolidation, and neurological development.
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