Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 10, Use the 68-95-99.7 rule to find the following quantities. a. The percentage of scores less than 100 is (Round to one decimal place as needed.) b. The percentage of scores greater than 110 is (Round to one decimal place as needed.) c. The percentage of scores between 80 and 110 is% (Round to one decimal place as needed.)