A study by the National Center for Health Statistics found that the BMI of American young women (ages 20-29) are normally distributed with a mean of 26.8 µ = and a standard deviation of 7.4 σ =.
a. The middle 95% of this population would have a BMI between _____ and _____.
b. What percent of the population have a BMI above 19.4?
c. The National Center for Health defines a person with a BMI associated with a z score - of -1.12 or less to be underweight. According to this definition, would a young woman with a BMI of 21.3 be underweight?