You are about to go for an hour run and you make a random playlist of 15 songs. What is the probability that your playlist lasts for the entire duration of your run? (Hint: If you want the playlist to last 60 minutes, what should be the minimum average length of a song?) The minimum average length of a song if the playlist is to last the full 60 minutes can be: _____ minutes
a. 2
b. 3
c. 4
d. 5