Jet wants to survey the approximately 10,000 families in two ZIP code areas. Of course, he cannot survey all of them, so he must use a sample. For each of the following possible ways of selecting a sample of the families living in several subdivisions in two ZIP code areas: (1) identify the type of sample method; (2) identify the sample frame; (3) indicate what, if any, sample frame error there is; and (4) indicate the degree to which the resulting sample will be representative of all families living in the two ZIP code areas.