An Investigator Wishes to Determine Whether the Difference Between Two

question 189

Multiple Choice

An investigator wishes to determine whether the difference between two groups of participants is statistically significant. To answer that question, the investigator must first determine the difference between the means of the two groups, the number of participants in each group, and

• A) the age of participants in each group.
• B) the duration of the experiment in hours.
• C) the amount of variation in each group.
• D) the strength of motivation by members of each group.

---

Definitions:

Circumferential

Pertaining to or forming a circle or a circumference.

Concentric

A type of muscle contraction where the muscle shortens while generating force, commonly occurring during the lifting phase of an exercise.

Interstitial

Pertaining to spaces within tissues or organs, outside of the blood vessels and cells.

Appositional

Pertaining to growth or deposition of new tissue layers on existing layers, as seen in bones and some tissues.