The Body Mass Index (BMI) is used a screening tool for possible weight problems. Adults with a BMI less than 18.5 are considered underweight and those with a BMI greater than 25 may be overweight. A study selected a sample of $sample women aged 20-29 years from the US population of 20 million women in this age group. The mean BMI for these women was = $bmi. The standard deviation is known to be = $stddev.
The 68-95-99.7 rule for Normal distributions says that about 95% of the probability is within viONEQg/IQeWTS2b standard deviations of the mean.
The 95% confidence interval for the mean BMI of women aged 20-29 years of age is from j1zwxAesmoE= to Sdfro4d5nlo=