Question: An industry is being charged by the Environmental Protection Agency (EPA) with dumping unacceptable levels of toxic pollutants in a lake. Over a period of several months, an engineering firm makes daily measurements of the rate at which pollutants are being discharged into the lake. The engineers produce a graph similar to either Figure (a) or Figure (b). For each case, give an idea of what argument the EPA might make in court against the industry and of the industry's defense.
