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.
Answers: 1
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
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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
The difference between an observational study and an experiment is that a. in an observational study...
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