For each of the following scenarios, discuss (in at most five sentences) the main issue(s) with respect to sampling or reporting bias. a) A particular city has 14 architects who own their own firm. To select a survey sample, each architect was contacted via telephone by order of appearance in the telephone directory, then the first 8 that agreed to be interviewed formed the sample.
b) The September 1992 issue of Prevention magazine included a women’s health survey; approx- imately 16,500 women responded to the survey. The May 1993 issue reported on the survey results, claiming that "92% of our readers rated their health as excellent, very good, or good".
c) Many scholars and policymakers are interested in estimating the prevalence of mental illness among the homeless population. In one study, the authors sampled homeless persons who received medical attention from a clinic that was part of the Health Care for the Homeless project, resulting in an estimated prevalence of 33%.1 The authors maintain that selection bias is not a serious problem because the clinics are easily accessible to homeless people.