Madison County has a population of 34,522 people. The county hospital is interested in estimating the number of people in the county with blood-type AB+. To do this they test blood samples from 527...

Madison County has a population of 34,522 people.  The county hospital is interested in estimating the number of people in the county with blood-type AB+.  To do this they test blood samples from 527 patients.  Out of this group, 22 have blood type AB+.  Use this sample to estimate the number of people in Madison County with blood-type AB+.