Alamo Rent-A-Car executives believe that Alamo accounts for about 50% of all Cadilacs which are rented. To test this belief a researcher randomly identifies 20 major airports with on-site rental car lots. Observers are sent to each location and instructed to record the number of rental company Cadillacs observed in a four-hour period. About 500 are observed, and 30% are observed being returned to Alamo Rent-A-Car. What are the implications of this finding for the Alamo executives’ belief?