The Snappy Service gas station manager is thinking about a promotion that she hopes will bring in more business to the full service island. She is considering the option that when a customer request a fill up, if the pump stops with the dollar amount at $19.99 the customer will get the gasoline free. Previous studies show that 70% of the customers require more than 20.00 when they fill up so would not be eligible for the free gas. What is the probability that a customer will get free gas at this station if the promotion is implemented?