Chapter 1, Problem 8AYK

_______ Which of the following statements is incorrect? a. Rates of preterm delivery and low birth-weight in the United States are trending downward but remain higher in non-Hispanic Black American women and infants than in other groups. b. Reductions in the proportion of infants born small, early, or both would clearly decrease infant mortality. c. The international ranking of the United States for infant mortality rate has been improving since the beginning of the twenty-first century. d. National health objectives for pregnant women and newborns focus on the reduction of low birth-weight, preterm delivery, and infant mortality.

In one survey, fifteen randomly selected students were found to be taller than 6 feet. This data led to the conclusion that the average height of a student is greater than 6 feet. This is an example of __________. a. experimental error b. sampling error c. a subjective opinion d. experimental bias

Perfect pitch is the ability to identify a note when it is sounded. In a study of this behavior, perfect pitch was found to predominate in females (24 out of 35 in one group). In one group of seven families, individuals in each family had perfect pitch. In two of those families, the affected individuals included a parent and a child. In another group of three families, three or more members (up to five) of each had perfect pitch, and in all three families, two generations were involved. Given this information, what, if any, conclusions can you draw about whether this behavioral trait might be genetic? How would you test your conclusion? What further evidence would be needed to confirm your conclusion?