The World Health Organisation estimates that at least 2.8 million people die each year as a result of being overweight or obese. As a result, most National Health Ministries seek to understand the health implication of this to school children. Body Mass Index (BMI) is used globally to measure body fat based on weight and height. It is calculated as weight (height)2. The BMI of 20 school children was randomly selected as shown in the table below. a) Test the hypothesis that the mean BMI of the school children exceeds 25 kg/m. b) What is the p-value of the test statistic?

DNT UT LU n children 2 22.3 31.8 18.8 23.4 21.2 29.2 27.9 27.1 27.1 31.9 18.0 25.0 31.6 24.7 21.8 26.9 30.7 24.8 19.8 26.7 BMI of 20 children Ike/m? 22.3 18.8 21.2 27.9 27.1 18.0 31.6 21.8 30.7 19.8 31.8 23.4 29.2 27.1 31.9 25.0 24.7 26.9 24.8 26.7