Mathematics, 10.12.2020 06:40, palomaresmitchelle
Which of the following distinguishes an observational study from a randomized experiment?
In an observational study volunteers are always used, whereas in a randomized experiment a random sample is always taken from the population.
In an observational study volunteers are always used, whereas in a randomized experiment a random sample is always taken from the population.
A
In an observational study a random sample is always taken from the population, whereas in a randomized experiment volunteers are always used.
In an observational study a random sample is always taken from the population, whereas in a randomized experiment volunteers are always used.
B
In an observational study treatments are not randomly assigned, whereas in a randomized experiment treatments are randomly assigned.
In an observational study treatments are not randomly assigned, whereas in a randomized experiment treatments are randomly assigned.
C
In an observational study a control group is never used, whereas in a randomized experiment a control group is always used.
In an observational study a control group is never used, whereas in a randomized experiment a control group is always used.
D
An observational study can be double-blind, whereas a randomized experiment can only be single-blind because the experimenter determines who is randomly assigned to each treatment.
Answers: 3
Mathematics, 21.06.2019 16:30, cheergirl2854
Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?
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Mathematics, 21.06.2019 17:40, nicole5918
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Answers: 1
Which of the following distinguishes an observational study from a randomized experiment?
In an obs...
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