what is the average (arithmetic mean) annual salary of the 6 employees of a toy company? if the 6 annual salaries were ordered from least to greatest, each annual salary would be $6,300 greater than the preceding annual salary. the range of the 6 annual salaries is $31,500. a. statement (1) alone is sufficient, but statement (2) alone is not sufficient. b. statement (2) alone is sufficient, but statement (1) alone is not sufficient.