Body mass index (BMI) is a simple index of weight-for-height that is commonly used to classify overweight and obesity in adults. According to a study by the National Center for Health Statistics, the BMI of American men is normally distributed with a mean of 26.6 kg/ m2 and a standard deviation is 5.2 kg/m2. If 100 different American men are randomly selected, what is the probability that their mean BMI is less than 25.0 kg/m2 (the cutoff between normal and overweight)? (5 points) a. 0.001 b. 0.31 c. 0.38 d. 0.999