An Experimenter Examines the Level of Noise in a School

question 3

Multiple Choice

An experimenter examines the level of noise in a school bus full of children under the following conditions: baseline, rock music, baseline, classical music.  In this experiment, the dependent variable is:

• A) Time
• B) The number of children on the bus
• C) The level of noise
• D) The type of music

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Definitions:

20th Century

A period from 1901 to 2000 characterized by significant technological, social, and political changes globally.