While College Students May Sometimes Be an Exception, Most Humans

question 172

Multiple Choice

While college students may sometimes be an exception, most humans sleep at night and are awake during the day. What maintains this relationship?

• A) The eye relays messages to the brain about light levels, which synchronizes the circadian rhythms to the day-night cycle.
• B) People get more exercise during daylight, which promotes alertness and wakefulness.
• C) Ambient air temperature is cooler at night, which triggers the body to sleep.
• D) Our internal biological clock is synchronized with the day-night cycle when we are born.

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Definitions:

Random Error Term

A component of a statistical model that captures the variability not explained by the explanatory variables.

Values

Represent individual measurements or quantities in a set of data.

Residuals

Differences between observed and predicted values in a statistical model, representing the unexplained part of the data.

Linear Regression Model

A mathematical approach that fits a linear equation to observed data to model how a dependent variable changes in relation to one or more independent variables.