All of the following are examples of a sample that suffers from an undercoverage bias except: a poll on missouri dentist's attitudes, based on questionnaires sent to a registry of attendees at the largest dental convention in the state. a random sample of 5,000 u. s. adults with survey data collected via email. none of the other answers are correct the mean income of u. s. citizens, based on census data. a simple random sample of licensed drivers, taken from driver-licensing records. an estimate of an election outcome based on a sample of voters' names taken from automobile registrations.