Multiple sclerosis is a rare autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. There is currently no known cure for the disease but pharmaceutical companies have developed a drug that they believe reduces relapses. They first need to perform a clinical trial where 40 individuals received the drug and 40 individuals received a placebo. The ________ step of the statistical problem should include the question that is going to be answered: Does the drug cause less relapses than the placebo