Question

Carmen conducted an experiment to determine if listening to different types of music would affect a person’s

pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to
seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and
then after each 30-second interval of music. The pulses were taken again after the music selections were
completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person
listened to different types of music.
1. What is the independent variable from her experiment?
A. the 30 second intervals of listening to music B. the types of music
C. the rate of the pulses D. not listening to music

Answer 1

The answer should be the the type of music or B

Answer 2

Answer: The independent variable from Carmen's experiment is B. the types of music.

Step-by-step explanation: