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yerlidalton yerlidalton
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7 years ago
A study examining the effects of white noise on concentration used two groups. The first group was exposed to 80 decibels of white noise for 30 minutes. The second group wore noise-canceling headphones also for 30 minutes. The group wearing the headphones is called the   
A) control group
B) alternative group
C) null group
D) experimental group
Textbook 
An Introduction to Statistics and Research Methods: Becoming a Psychological Detective

An Introduction to Statistics and Research Methods: Becoming a Psychological Detective


Edition: 1st
Authors:
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dancovietdancoviet
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7 years ago
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yerlidalton Author
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7 years ago
Excellent
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