We Have Calculated a 95% Confidence Interval and Would Prefer

question 49

Multiple Choice

We have calculated a 95% confidence interval and would prefer for our next confidence interval to
Have a smaller margin of error without losing any confidence. In order to do this, we can
I. change the z value to a smaller number.
II. take a larger sample.
III. take a smaller sample.

• A) I and III
• B) I and II
• C) III only
• D) I only
• E) II only

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Definitions:

Sacral Region

The area of the body related to the sacrum, a triangular bone at the base of the spine formed by the fusion of five sacral vertebrae.

Myogenic Mechanism

A physiological mechanism by which blood vessels automatically adjust their resistance to maintain constant blood flow despite changes in arterial blood pressure.

Afferent Arterioles

Small blood vessels that carry blood toward the nephrons in the kidneys, regulating blood pressure and filtration.

Blood Pressure

The force exerted by circulating blood on the walls of blood vessels, an essential indicator of cardiovascular health.