Consider a nationally recognized standardized college admissions test with scores that are normally distributed, centered at a mean of 21, and have a standard deviation of 4.5. Use the 68-95-99.7 Rule to find the percentage of scores in each of the following scenarios:

Percentage of scores less than 12:

Percentage of scores greater than 16.5:

Percentage of scores between 21 and 30:

Percentage of scores between 16.5 and 30: