A Researcher Distributes a Survey to College Students

question 7

Multiple Choice

A researcher distributes a survey to college students.One question asks,"How many hours per night do you sleep?" and another asks,"What is your GPA?" If the study has a cross-sectional design,which conclusion is possible?

• A)Students who sleep more have higher GPAs.
• B)Excessive sleep boosts GPAs.
• C)Because they don't sleep enough,some students have lower GPAs.
• D)Having a higher GPA causes students to sleep less.

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Definitions:

Blood Specimen

A sample of blood taken for testing or analysis to diagnose, monitor, or treat various health conditions.

Sputum

A mixture of saliva and mucus coughed up from the respiratory tract, especially from the lungs, used for diagnosing respiratory diseases.

Angiography

A medical imaging technique used to visualize the inside of blood vessels and organs of the body, specifically arteries, veins, and the heart chambers.

Blood Urea Nitrogen

A medical test that measures the amount of nitrogen in the blood that comes from the waste product urea, used to assess kidney function.