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The following are the annual salaries of 18 chief executive officers of major companies. (The salaries are written in thousands of dollars.) 315, 633, 405, 562, 1108, 676, 542, 495, 157, 428, 452, 1250, 362, 381, 248, 743, 653, 472 Send data to calculator Send data to Excel Find 20 and 75 percentiles for these salaries. D (If necessary, consult a list of formulas.) (a) The 20 percentile: |thousand dollars (b) The 75 percentile: thousand dollars