I need help but please don't give me the answer just want to see if i'm right...

Question

anonymous · Answer

Ruben wants to determine if listening to different types of music will have an effect on a person’s pulse. His hypothesis states that if a person listens to rap music, their pulse will increase more than if they listen to other types of music. Ruben takes each participant’s pulse before, during, and after listening to 30 minutes of music. He has his mother listen to rock music, his sister listen to classical music, and his friend listen to rap music. From the data collected, he determined that rap music raises a person’s pulse the most.

anonymous · Answer

never mind i changed my answer to: the independent variable is the type of music he plays for the people. The dependent variable is the pulse rate for the beginning, middle, and end of the experiment.

anonymous · Answer

I think your second answer is correct. the first one didn't really make sense