Statistics › Sampling and inference › Capture-recapture estimates
Estimating frog population by recapture
Middle school · ●○○○○ 10 pts
One day, 45 frogs were captured from a pond, marked and then returned to the pond. The next day, 40 frogs were observed in the pond, of which 10 had been marked the previous day. Assuming the marked frogs are equally distributed among all the frogs in the pond, what is the best estimate of the number of frogs living in the pond?