The other five groups learned the meaning of the symbol with a noise source of

The other five groups learned the meaning of the

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pollution outside of their classrooms. The other five groups learned the meaning of the symbol with a noise source of 55 decibels outside their classrooms, maintained continuously for the 15-minute lesson. One week after the lesson, 80% of the students who were not exposed to the noise sources were able to successfully recall the meaning of the symbol and 25% of the students exposed to the noise sources were able to successfully recall the meaning of the symbol. i. Identify the dependent variable in the experiment. a) noise source of 55 decibels outside their classrooms, maintained continuously for the 15-minute lesson ii. Describe the control for the experiment. a) 80% of the students who were not exposed to the noise sources iii. Based on the described experiment, state a valid hypothesis for the experiment. a) Most of the students who are exposed to noise pollutants will not learn well and will forget the material they are thought iv. Describe how the addition of insulation inside the walls of the classroom would most likely affect the results of the study. a) Insolation would reduce the noises which would prevent us from seeing how if affected with noise pollutant how the children's learning would be affected
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