The National Health and Nutrition Examination Survey is a long-term research program that uses random sampling methods to examine the health and nutrition among adults and children in the United States. One study of 2437 young adults (aged 18 25 years) found that 35% reported eating foods with added sugars (e.g., soda, brownies) at least 5 times per week. In addition to questions about food consumption, researchers asked questions about periodontal disease. The young adults who reported eating added sugars more than 5 times per week had a 73% higher risk of developing periodontal disease than did those who reported eating no added sugars, and the increase was statistically signicant. Based on the study, is it reasonable to say that eating foods with added sugars causes periodontal problems? Explain your answer. [ Select ] V . The researchers [ Select ] young adults to eat foods with added sugars a certain number of times per week.randomly sampled did not randomly assign di not randomly sample randomly assigned 0 O O O Can eating nuts during pregnancy help children avoid nut allergies? Researchers studied over 8000 children who were born in the early 19905 to mothers who were part of the Nurses' Health Study ll. Children whose mothers ate the most nuts during pregnancy (at least 5 times per week) were signicantly less likely to develop nut allergies than children whose mothers ate the least amount of nuts during pregnancy (less than once per month). What is the largest population to which we can generalize these results? O All mothers who eat nuts during pregnancy. 0 All mothers like the ones in the study. 0 Children with nut allergies. O All mothers. l: Question 3 3.33 pts A government agency takes a random sample of income tax returns to obtain information on the average income of people in different occupations. Only the incomes and occupations are recorded from the returns, not the names. Should this study require informed consent? Explain your reasoning. 0 Yes, it is imperative that all research require informed consent forms. 0 No, the government is acting as the researcher. 0 Yes, the people in the study were randomly selected. No, the data was collected anonymously and condentially