Randomized Trials

question 28

Multiple Choice

Randomized trials:

• A) cannot effectively establish causation.
• B) can be very expensive.
• C) avoid ethical problems.
• D) are the least expensive way to test a hypothesis.

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Definitions:

Systolic Pressure

The maximum arterial blood pressure during heart contraction, measured in millimeters of mercury (mmHg).

Diastolic Pressure

The pressure in the arteries when the heart rests between beats, representing the minimum arterial pressure during relaxation.

Velocity

The speed of an object in a given direction.

Cross-Sectional Area

A measurement of the size of a cross-section of a three-dimensional object, often used to calculate properties like flow and resistance.