Easy Ride Van Company finds that about 40 percent of the time a person who makes an advance reservation for transportation does not keep the reservation. Therefore, for each of their 10-passenger vans, the Easy Ride Van Company schedules 13 persons on the basis of advance reservations. Based on this information, about how many riders out of the 13 scheduled would not keep their reservations?
  1. 1

  2. 3

  3. 5

  4. 7

  5. 9