Determine whether the description corresponds to an observat…

Determine whether the description corresponds to an observational study or an experiment.  Explain. Fifty patients with heart arrhythmias are divided into two groups.  One group receives a new drug to regulate heart rhythm, the other a placebo.  After one month, the presence of arrhythmias are measured.

Shortly after graduation, you move to Washington, DC to star…

Shortly after graduation, you move to Washington, DC to start working in a federal government agency.  You’re on top of the world!  Until you open your mail and see a copy of a civil complaint.  Your former OSU roommate has filed a lawsuit against you in federal court in the Southern District of Ohio.  Your roommate claims you failed to pay your half of the last month’s rent ($1,200).  What’s your best argument against this lawsuit?