2. The body mass index (BMI) is calculated for a random sample of 100 U.S. adults. The mean BMI for those who were sampled was 2166 with a standard deviation 3.53. it) Find and interpret an (approximate) 95% condence interval for the true mean BMI of US. adults. b} When calculating the condence interval in a), what assumption did you make about the population from which the data was sampled? e) A BMI greater than 25 is considered as overweight. Would you consider America's average BMI as overweight? Explain