Question: A study is conducted where 30 subjects are asked their daily intake of Vitamin D. The resulting data are normally distributed, with a mean of 600 IUs (international units) and an SD of 100 IUs. What approximate percentage of the study subjects are expected to fall in the range of 500 to 600 IUs of Vitamin D per day? What information provided about the dataset allows you to answer this? (5 points)