subject
Mathematics, 21.05.2020 23:57 esekvng1596

Forest rangers at a national park want to take a sample of trees to estimate what proportion of trees in the park are infected with a certain disease. The population of trees in question is divided by a creek. East of the creek, most of the trees are oak. West of the creek, most trees are cedar, which are more likely to be infected. The rangers are considering taking a stratified random sample using each side of the creek as strata. They'll sample trees from each side proportionately based on the total number of trees on each side. Why might the rangers choose stratification instead of a simple random sample to estimate the proportion of infected trees?

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 18:00, ninaaforever
What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2
Answers: 2
image
Mathematics, 21.06.2019 18:00, amw4
What is the relationship between all triangles that can be drawn given the same three angles
Answers: 2
image
Mathematics, 21.06.2019 19:30, tsmalls70988
What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)
Answers: 1
image
Mathematics, 21.06.2019 20:30, gamelaza431
At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.
Answers: 1
You know the right answer?
Forest rangers at a national park want to take a sample of trees to estimate what proportion of tree...

Questions in other subjects:

Konu
History, 28.10.2020 18:50
Konu
Mathematics, 28.10.2020 18:50
Konu
Mathematics, 28.10.2020 18:50