Questions 1-7 of 7
Question 1 (1 point)
Students taking an exam at Westwood High School were randomly selected to receive either a
peppermint candy or a similar looking candy without peppermint to determine if peppermint
really improves thinking. The students knew the design of the experiment before the exam.
Both groups showed an increase in test scores. This is an example of
A) a successful experiment due to the peppermint treatment.
B) poor design due to the lack of a control group.
C) measurement bias since we do not know the difficulty level of the exam.
D) the placebo effect due to the increase of scores in the non-peppermint group.
E) blocking by peppermint and no peppermint candy.
Answer:
Blank 1: