Mathematics, 08.04.2021 21:00 demetriascott20
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?​
Answers: 3
Mathematics, 21.06.2019 20:00
Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.
Answers: 1
Mathematics, 21.06.2019 22:50
Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.
Answers: 1
Mathematics, 22.06.2019 00:00
Can someone me with this? i’m not sure what to put for my equations.
Answers: 2
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