Suppose a normally distributed set of data has a mean of 108 and a standard deviation of 12. Use the 68-95-99.7 Rule to determine the percent of scores in the data set expected to be below a score of 120. Give your answer as a percent and include as many decimal places as the 68-95-99.7 rule dictates.
Caution: Using tables or Excel for this may produce a wrong answer. Use the 68-95-99.7 rule.