Problem: In the scenario involving immunization coverage in Brazil (Teixeira et. al., 2011), researchers noted that their target audience was men and women that were between 20 to 39 years of age. Considering their door-to-door survey methods and their randomizing of areas and doors to knock on, do you think researchers were clear in communicating their success in reaching their target audience? While researchers did note they were able to assess 1.5 million Brazilians, they were not clear in how many individuals represented their target audience.