Janie Has Found That the Number of Hours She Sleeps

question 379

Multiple Choice

Janie has found that the number of hours she sleeps each night is related to the scores she receives on quizzes the next day. As her sleep approaches eight hours, her quiz scores improve; as her sleep drops to five hours, her quiz scores show a similar decline. Janie realizes that:

• A) her low quiz scores are caused by sleep deprivation the night before a quiz.
• B) she should sleep about 10 hours a night to ensure 100% quiz grades.
• C) worrying about low quiz scores causes her to have insomnia before a quiz.
• D) there is a positive correlation between the number of hours she sleeps and her quiz grades.

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Definitions:

Blood Pressure

The pressure of circulating blood against the walls of blood vessels, a critical indicator of cardiovascular health.

Membrane

A thin layer of tissue or material that acts as a barrier, separating different areas or environments, or allowing selective passage of substances.

DNA

Deoxyribonucleic acid, a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms.

Body Trait

A characteristic or feature of the physical body, which can be inherited or developed.