Question

3. An ecology graduate student goes to a pond and captures 40 water beetles, marks each with a dot of paint, and then releases them. A few days later she goes back and captures another sample of 60, finding 12 marked beetles and 48 unmarked. (a) Assuming that the pond contains n beetles, determine the probability L(n) that a catch of 60 beetles will contain 12 marked ones.

Name: 3 an ecology graduate student goes to a pond and captures 40 water beetles marks each with a dot of paint and then releases them a few days later she goes back and captures another sample of 04436
Uploaded: 2022-06-28T05:37:30-08:00
Duration: 3 min 16 s
Channel: Sri K
Description: 3 an ecology graduate student goes to a pond and captures 40 water beetles marks each with a dot of paint and then releases them a few days later she goes back and captures another sample of 04436

          3. An ecology graduate student goes to a pond and captures 40 water beetles, marks each
with a dot of paint, and then releases them. A few days later she goes back and captures
another sample of 60, finding 12 marked beetles and 48 unmarked.
(a) Assuming that the pond contains n beetles, determine the probability L(n) that a
catch of 60 beetles will contain 12 marked ones.

Added by Hannah W.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

06/28/2022

Step 1

Step 1: The probability of capturing a marked beetle in the first sample of 40 beetles is 40/n, as there are n beetles in the pond and 40 of them are marked. Show more…

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3. An ecology graduate student goes to a pond and captures 40 water beetles, marks each with a dot of paint, and then releases them. A few days later she goes back and captures another sample of 60, finding 12 marked beetles and 48 unmarked. (a) Assuming that the pond contains n beetles, determine the probability L(n) that a catch of 60 beetles will contain 12 marked ones.