-1 SD Mean +1 SD -2 SD +2 SD -3 SD +3 SD 55 70 85 100 115 130 145 a) What is the mean? b) What percent of the scores fall between 85 and 115? c) What percent of the scores fall between 100 and 115? d) What percent of the scores fall between 100 and 130? e) What percent of the scores fall between 115 and 145? f) What percent of the scores fall between 70 and 85?