=+3. The World Health Organization has described being overweight as a global epidemic that is rapidly becoming a major public health problem. Body Mass Index (BMI) values, often used to measure obesity, show strong variability amongst countries, with New Zealand scoring at the high end. A recent study found mean BMI levels for adults aged 15 and over to be about 26 kg/m2

, with a standard deviation of about 3.5 kg/m2

, and a roughly Normal distribution. If BMI measures of a sample of 42 adults from New Zealand are collected,