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5 Stages of Sleep: Psychology, Cycle & Sequence

Here's How Eye Movement During Sleep Is Connected to Dreams

SOLVED: REM (rapid eye movement) sleep is the sleep during which most dreams occur. Each night, a person has both REM and non-REM sleep. However, it is thought that children have more REM sleep than adults. We assume that REM sleep time is normally distributed for both children and adults. A random sample of ni children (9 years old) showed that they had an average REM sleep time of X1 = 2.9 hours per night. From previous studies, it is known that σ1 = 1 hour. Another random sample of n2 adults

Dement and Kleitman - Eye movements in sleep