The T Test for Independent Means Is Used When Each

question 47

Multiple Choice

The t test for independent means is used when each group is tested ______.

• A)once or twice
• B)only twice
• C)only once
• D)any number of times

---

Definitions:

Pressure Changes

Variations in the force exerted by a fluid or gas on its surroundings, which can affect weather, physical health, and mechanical operations.

Auditory System

The sensory system that includes the ears and the brain structures that process sound.

Sound

Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.

Volley Principle

A theory explaining how auditory neurons work together to convert high-frequency sound waves into electrical signals by firing in rapid succession.