Chapter 5.1 Assignment All work must be done on a notebook sheet of paper. If a calculator is used, the calculator input must be shown on the notebook paper in order to receive full credit. 1. A study of elite distance runners found a mean body weight of 63.1 kilograms (kg), with a standard deviation of 4.8 kg. Assuming that the distribution of weights is approximately Normal, make an a. accurate sketch of the weight distribution with the horizontal axis marked in kilograms. b. Find the proportion of runners whose body weight is between 48.7 and 67.9 kg. c. What proportion of runners have body weights below 60 kg? The scores of a reference population on the Wechsler Intelligence Scale for Children (WISC) are approximately normally distributed with H 100 and s 15. 2. a. b. c. A score in what range would represent the top 1% of the scores? What proportion of the reference population has WISC scores below 110? What proportion of the reference population has WISC scores between 80 and 110? 3. The Program for International Student Assessment (PISA) conducts tests in mathematics in countries throughout the world. For 15-vear-olds in all develnned