Baby weights: The weight of male babies less than 2 months old in the United States is normally distributed with mean 11.6 pounds and standard deviation 2.8 pounds. Use Excel to answer the following Round the answers to four decimal places Part 1 of 4 (6) What proportion of babies weigh more than 13 pounds? The proportion of babies weighing more than 13 pounds is 0.3085 Part 2 of 4 (b) What proportion of babies weigh less than 15 pounds? The proportion of babies weighing less than 15 pounds is 0.8869 Part: 2/4 Part 3 of 4 (c) What proportion of babies weigh between 9 and 13.2 pounds? The proportion of babies weighing between 9 and 13.2 pounds is