38. Body Mass Index (BMI). The body mass indexes of American men between ages 30 and 50 are normally distributed with a mean of 26.2 and a standard deviation of 4.7. a. Determine the standard score and the percentile of a BMI of 25. b. Determine the standard score and the percentile of a BMI of 28. c. Several health organizations have declared that men with a BMI of 25 or greater are overweight and that men with a BMI of 30 or greater are obese. What percentage of American men are overweight? Obese