Water loss: Human skin loses water through evaporation, and, in, general, damaged skin loses water at a faster rate than undamaged skin. Before 11, 15, 14, 17, 15, 11, 14, 14, 18, 12, 13 After 21, 24, 22, 21, 22, 19, 23, 22, 19, 20. Construct a 99% confidence interval for the mean in water loss.