Wildlife biologists wish to estimate the total size of the bobwhite quail population in a section of southern Florida. A series of 50 traps is used. In the first sample, t 320 quails are caught. After being captured, each bird is removed from the trap and tagged with a metal band on its left leg. All birds are then released. Several months later, a second sample of n 515 quail is obtained. Suppose s 91 of these birds have tags. Estimate N and place a bound on the error of estimation.