Introduction to the Normal Distribution Similarly, in 2004, 2,697,819 babies were born that weighed between 3000 and 4000 grams. Calculate the proportion of these births between 3000 and 4000 grams. How does this proportion compare to the probability calculated by the normal model in the previous part? Based on your answers to the previous questions does the normal model appear to be doing a reasonable job of 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 predicting how often these outcomes occur? Birth Weight (gram)