Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations.


Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations.

A medical researcher completed a study comparing an omega-
fatty acids supplement to a placebo in the treatment of irritability in patients with a certain medical condition. Nineteen patients with the medical condition volunteered to participate in the study. The study was conducted using the following weekly schedule.



Each patient took a randomly assigned treatment, omega-
supplement or placebo.


The patients did not take either the omega-
supplement or the placebo. This was necessary to reduce the possibility of any carryover effect from the assigned treatment taken during week
.


Each patient took the treatment, omega-
supplement or placebo, that they did not take during week
.
At the end of week
and week
, each patient’s irritability was given a score on a scale of
to
, with
representing no irritability and
representing the highest level of irritabilit