Mathematics, 16.01.2021 14:00 HernanJe6
Which of the following statements is NOT true?
1) A well-designed experiment is the only legitimate way to establish a cause-and-effect relationship between two variables.
2) We can use results from an observational study to test a claim about a population.
3) When an observational study has a large sample and follows people for many years, we can use the results to establish a cause-and-effect relationship between two variables.
4) When many observational studies together meet specific criteria, the results can provide varying degrees of evidence for a cause-and-effect relationship between two variables. But we should be cautious in interpreting such results
Answers: 2
Mathematics, 21.06.2019 18:00
Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.
Answers: 1
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 21:30
Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?
Answers: 1
Mathematics, 21.06.2019 22:00
Given sin∅ = 1/3 and 0 < ∅ < π/2 ; find tan2∅ a. (4√2)/9 b. 9/7 c. (4√2)/7 d.7/9
Answers: 2
Which of the following statements is NOT true?
1) A well-designed experiment is the only legitimate...
Engineering, 06.10.2020 04:01
Mathematics, 06.10.2020 04:01
English, 06.10.2020 04:01
English, 06.10.2020 04:01
Mathematics, 06.10.2020 04:01
Mathematics, 06.10.2020 04:01
Arts, 06.10.2020 04:01
English, 06.10.2020 04:01
Mathematics, 06.10.2020 04:01
Mathematics, 06.10.2020 04:01
English, 06.10.2020 04:01
Computers and Technology, 06.10.2020 04:01
Physics, 06.10.2020 04:01