A student considers how mnay people enter a particular bank during the lunch hour and how many exit. She decided to run a simulation. She assigns the value 0 to represent a person entering the bank and 1 to represent a person exciting the bank. Based on a simulation fot the first 20 people she observes, estimate the probability she will see a person entering the bank.
0 1 0 0 0 1 1 1 0 1 0 0 0 1 0 1 0 0 1 0

0.400
0.250
0.500
0.600