The main difference between a correlational study and an experiment is that in an experiment, __________. life.Group of answer choicesA. the participants are aware of the hypothesis being tested.B. All individuals receive the same treatment.C. The participants are observed without interference in their normalD. The investigator manipulates the independent variable.

What is the major difference between an experiment and an observational study?*1 pointA treatment is imposed in an experiment.Observational studies can use only one population.There two control groups instead of one in an experiment.An observational study can establish ca.use-and-effect relationshipsNONE OF THESE

Select all that applyFor what reasons might researchers use correlational research? Multiple select question.to conduct research in situations in which it would not be ethical to carry out an experimentto investigate real-world eventsto work with variables that can only be measured or observedto determine if there is a causal link between two variables

In a correlational study, ____.​Group of answer choices​two variables are measured and two groups are compared​one variable is measured and two groups are compared​one variable is measured and there is only one group of participants​two variables are measured and there is only one group of participants

______ studies are those in which participants do not know the experimental condition (group) to which they have been assigned.Multiple choice question.Single-blindDouble-blindExperimentalCorrelational

Which one of the following is an advantage of an observational study when compared to an experimental study? Lurking variables are not a problem. The treatments studied may be unethical when used in experiments. Randomization is less important because researchers are observing things “as they happen.” The treatment can be controlled by the researchers.