Question

A student conducted an experiment to determine if listening to different types of music would affect pulse rate. She thought that pulse rate would change with different types of music. Each person participating in her experiment listened to seven different selections of music for 30 seconds each. The pulse rates were taken after each 30-second interval of music. Based on her experiment, the student concluded that a personâs pulse rate changed when listening to different types of music. The component missing from this experiment is a (1) prediction (2) hypothesis (3) control group (4) research plan

Answer 1

(3) control group

Step-by-step explanation:

Control group refers to the group of standar individuals who do not receive treatment by researchers, so that their results are compared with the experiential group which did receive treatment.

In the experiment about pulse rate according to music, the student does not include the average pulse rate of the control group that was not exposed to different types of music.