Which type of study best describes the following research most likely to be done?
a researcher is testing new weight loss supplements. the researcher decides to sample two groups. the first
group of subjects, the researcher labeled group 'a: the researcher plans to give a placebo that looks like the
real medicine but is just a sugar pill to group 'a: the second group, group 'b', will be given the real medicine.
the researcher knows which participants got the placebo and which received treatment but the participants
don't know.
blind study
o double blind study
© open study
closed study