Mathematics
Mathematics, 01.08.2019 11:00, chelseal19847

The difference between an observational study and an experiment is that a. in an observational study, only one group is studied, and in an experiment, two groups are studied. b. in an observational study, the researchers do not control treatment, and in an experiment, they do. c. in an experiment, cause-and-effect is analyzed, and in an observational study, it is not. d. in an experiment, one group is studied over a short period of time, and in an observational study, the group is studied over a longer period of time.

answer
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 20:10, jessixa897192
Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52
Answers: 2
image
Mathematics, 21.06.2019 21:10, Harms
For each sentence below, find the value of x that makes each sentence true. (515) 5 = 25* x= (813)2 = 4* x=
Answers: 2
image
Mathematics, 22.06.2019 00:50, Boris1002
Consider the enlargement of the pentagon. what is the value of x, rounded to the nearest tenth? 2.1 centimeters 3.3 centimeters 7.0 centimeters 15.0 centimeters
Answers: 3
image
Mathematics, 22.06.2019 01:30, nandinipp0303
Robert is placing sod in two square shaped areas of his backyard. one side of the first area is 7.5 feet. one side of the other area is 5.7 feet. the sod costs y dollars per square foot
Answers: 3
Do you know the correct answer?
The difference between an observational study and an experiment is that a. in an observational study...

Questions in other subjects: