Annual sales, in millions of dollars, for 21 pharmaceutical companies follow. 8,308 1,274 1,772 8,879 2,359 11,513 708 14,138 6,552 1,850 2,718 1,456 10,598 7,578 4,119 4,341 639 2,227 3,553 5,894 8,405 (a) Provide a five-number summary (in million dollars). minimum 639 million dollars first quartile 1811 million dollars median 4119 million dollars third quartile 83556.5 million dollars maximum 14138 million dollars (b) Compute the lower and upper limits (in million dollars). lower limit million dollars upper limit million dollars (c) Do the data contain any outliers