9. The first 50 unique numbers
will represent the subjects that
will receive the new cream and
the remaining 50 subjects will
receive the inactive cream. All
subjects are exposed to poison
ivy and given their cream. They
are asked to return in three days
and report their level of irritation.
The average scores for each
cream are compared. Yes, the subjects will be exposed to the poison ivy.
Yes, the subjects are randomly assigned to each treatment.
No, the subjects are asked to return in three days. It is possible that some of them mav not