In a recent study, 20 males used a new weight-loss supplement, and all but 4 of them experienced weight loss after two weeks. In the same study, 100 females used the same supplement, and all but 8 of them experienced weight loss after two weeks.

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.