1. A study was created to test the effects of jazz on people's sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer
periods of time. For the experiment, 2 groups of people were created. One group was placed in a
quiet room where they went to sleep and they were timed on how long they slept. The other
group was placed in a room where jazz music played softly as they began to sleep and played
throughout the night. As each group awoke, their sleep times were monitored.
What is the dependent variable in this experiment?