The most recent NHANES report gives data for an SRS of 654 women aged 20 to 29 years The mean BMI of these 654 women was 26 8 On the basis of this sample we want to estimate the mean BMI u in the population of all 18 million women in this age group Past research has shown that the standard deviation for this population is 7 5 Based on the one sample used in the report we have O a 95 proof that the next sample mean will be in the same interval b 95 confidence that the population mean BMI is in the answer interval c the fact that the population mean BMI is 26 8 95 of the time d 95 evidence that any random 20 to 29 year old woman must have BMI between 26 21 and 27 39