18. We wish to test...
 
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18. We wish to test the hypothesis that music improves learning. We compare test scores of students who study to music with those who study in silence.

 

Aamir Ranjha
(@aamir)
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Joined: 2 years ago
Posts: 1496
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We wish to test the hypothesis that music improves learning. We compare test scores of students who study to music with those who study in silence. Which of the following is an extraneous variable in this experiment?

  1. the presence or absence of music
  2. the students' test scores
  3. the amount of time allowed for the studying
  4. silence

Spoiler
Answer
3. the amount of time allowed for the studying


   
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