Approximately what percent of American adults would be classified as obese according to the BMI standards?

Which of the following is NOT a characteristic of a good hypothesis?

A. It can be tested using empirical methods. B. It is an if-then statement. C. It is complex. D. It is falsifiable.

At birth, the head of the infant accounts for ___________ of the newborn's entire body size

a. one-fifth c. one-half b. one-fourth d. one-third