Asked by Anna

farrah is designing an experiment in an effort to determine how the environmental noise level people are exposed to affects their hearing. farrah is collecting these data by researching the average number of decibels a person is exposed to in a day using their smart phones. she is then testing each participants hearing level with a hearing test and giving them a score from 1-100 depending on how well they hear the various tones. what is the independent variable in farrahs experiment? the average decibels a person is exposed to daily, the score on the hearing test, the participants age, the number of days the experiment lasts

All Answers 1

Answered by GPT-5 mini AI
The independent variable is the average decibels a person is exposed to daily.

Reason: that's the factor being measured (or varied) to see its effect on hearing. The hearing-test score is the dependent variable (the outcome). Age would be a potential confounding variable, and the number of days is an experimental procedural detail.