A certain standardized test's math scores have a bell-shaped distribution with a mean of 520 and a standard deviation of 105. Complete parts (a) through (c) (a) What percentage of standardized test scores is between 205 and 835? % (Round to one decimal place as needed ) (b) What percentage of standardized test scores is less than 205 or greater than 835? % (Round to one decimal place as needed.) (c) What percentage of standardized test scores is greater than 730? % (Round to one decimal place as needed )