A study is testing the effectiveness of a new allergy medication. Sixty volunteers who reported they
experience allergies were randomly assigned to one of
two groups: one with the new medication, and another
with a placebo. After two weeks, the subjects' level of
allergic symptoms was surveyed.
n
Which of the following is a true statement concerning the
use of a placebo?
O The placebo is given to one group of subjects to see if
the subjects receiving the placebo experience fewer
allergic symptoms than the subjects taking the new
medication.
O The placebo is given to one group of subjects to see if
the subjects receiving the placebo experience more
allergic symptoms than the subjects taking the new
medication.
O The placebo is given to one group of subjects to see if
the subjects receiving the placebo think they have
fewer allergic symptoms because they believe they
are taking the new medication.
O The placebo is given to one group of subjects to see if
the subjects receiving the new medication think they
have fewer allergic symptoms because they believe