While doing research on a lake, biologists tagged 200 walleye. Later, they captured 160 walleye, of which 16 had tags. What is the BEST estimate for the walleye population?

Question

While doing research on a lake, biologists tagged 200 walleye. Later, they captured 160 walleye, of which 16 had tags. What is the BEST estimate for the walleye population?
Responses
A	2,6002,600
B	3,0003,000
C	2,0002,000
D	2,300

Bot · Answer

The BEST estimate for the walleye population would be:

(200 tagged walleye / proportion of tagged walleye in second sample)

proportion of tagged walleye in second sample = (16 tagged walleye / 160 total walleye in second sample) = 0.1

So, the estimate would be:

(200 tagged walleye / 0.1) = 2,000

Therefore, the answer is C) 2,000.