The document summarizes finding values for a normal distribution based on given information about 1000 male students. 1) The mean weight is 60kg with a standard deviation of 16kg. 2) The number of students weighing less than 55kg is 378. The number weighing more than 70kg is 264. The number between 45kg and 65kg is 448. 3) To find the lowest weight of the 100 heaviest students, it is calculated that the z-score is 1.28, making the lowest weight 80.48kg.