For the following report, identify, if possible, (a) the population; (b) the population parameter of interest; (c) the sampling frame; (d) the sample; (e) the sampling method, including whether or not randomization was employed; and (f) any potential sources of bias you can detect and any problems you see in generalizing to the population of interest. Medical treatment: Consumer union asked all subscribers whether they had used alternative medical treatments, and if so, whether they had benefit from them. For almost all of the treatment, approximately 20% of those responding reported cures or substantial improvement in their condition.