A Researcher Wants to Compare the Performance of Three Types

question 102

Multiple Choice

A researcher wants to compare the performance of three types of pain relievers in volunteers
Suffering from arthritis. Because people of different ages may suffer arthritis of varying degrees of
Severity, the subjects are split into two groups: under 60 and over 60. Subjects in each group are
Randomly assigned to take one of the medications. Twenty minutes later they rate their levels of
Pain. This experiment …

• A) has two factors, medication and age.
• B) is completely randomized.
• C) has one factor (age) blocked by medication type.
• D) uses matched pairs.
• E) has one factor (medication) blocked by age.

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Definitions:

U.S. Population

The total number of people living in the United States, a figure that changes due to birth rates, death rates, and immigration.

Deregulation

The reduction or elimination of government power in a particular industry, usually intended to increase competition and efficiency.

Technology Improvements

Refinements or advancements in technology that result in better performance, efficiency, or effectiveness of devices, systems, or processes.

National Borders

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