A sales clerk wants to predict the shoe sizes that will be sold this weekend for a new shoe that is going on sale. She uses her computer to simulate the first 15 customers who purchase the shoe. Based on the simulated results, what is the probability that a randomly selected customer will purchase a shoe size less than a size 7.5?
8.5 9.5 5.0 10.0 5.5 9.0 6.0 6.5 9.5 10.5 8.5 7.0 11.0 6.5 8.5
