Question

Jack conducts an experiment to see whether fear makes mice run through mazes faster. He first selected a sample of 60 mice and then divided them into a control group and an experimental group. He plays a loud sound for the experimental group and induces fear into them. He noticed that the control group mice were running faster. He discovers that someone left a piece of cheese accidently at the end of the maze for the control group which should not have been there.
What is the independent variable from the study above?

Answer 1

Answer:

Explanation:

loud sound

Answer 2

Answer:

The independent variable is the loud sound.

Explanation:

An independent variable is the variable that is purposefully changed or controlled in an experiment. The piece of cheese was not purposefully left there and is not the independent variable.

Hope this helps!