Question

Vanessa claims that she sleeps better when she falls asleep to music. She has a comparison group because she has noticed that she does not listen to music every night, only when she remembers to charge her iPod. She typically remembers to charge her iPod on nights when she is able to finish studying earlier.

What problem do you see in Vanessa’s reasoning about sleeping better to music?

Answer 1

Vanessa may be sleeping better because she is less distracted by studying/going to bed sooner.

Step-by-step explanation:

After reading all the facts, the primary fact that might influence or not Vanessa's sleep is studying. When she does so, she sleeps better given that she does not worry about it. As the exercise mentions, she only charges her iPod when she finishes studying, therefore, she is more relaxed when going to bed. When she does not do so, means that she hasn't finished studying and, when in bed, must worry her.