During REM Sleep

question 2

Multiple Choice

During REM sleep,

• A) the brain is less active than at any other time.
• B) heart rate and breathing rate are low and steady.
• C) the muscles are tense and active.
• D) dreaming is likely to occur.

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Definitions:

Stratified Sample

A stratified sample involves dividing a population into smaller groups, or strata, and randomly sampling from each stratum to ensure representation of all groups.

Random Selection

A method of selecting individuals or units in such a way that each member of the population has an equal chance of being selected.

Blocking Variable

A variable that is used to group experimental units in a way that reduces variation in the response variable.

Weather

The condition of the atmosphere at a particular place and time, including temperature, humidity, wind, and precipitation.