Thu Jan 17, 2013 11:38 pm by tartle 


A biologist wants to estimate the number of elk in a wildlife preserve. She sedates 125 elk and clips a small radio transmitter onto the ear of each animal. The elk returns to the wild, and after 6 months, the biologist studies a sample of 920 elk in the preserve. Of the 920 eld sampled, 34 have radio transmitters. Approximately how many elk are in the whole preserve? 




Sun Sep 08, 2013 9:34 pm by L 


24894 to the nearest whole elk 




Thu Jul 14, 2016 7:19 am by Dzallen 


Since sample proportion is an unbiased estimator for population proportion:
920*125/34=3382 (to the nearest elk) 




Thu Jul 14, 2016 2:25 pm by bathfilms 


34/920 elks are tagged
so 125/3382.35 are tagged (estimate based on equivalent fractions)
So about 3382 is the total 






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