Please answer the blank ones, and question b. Thank you.

TABLE 9.3 Computers, Inc., stock price history Trading Day Trading Day Industry Index 50.0 50.1 50.5 50.4 51.0 50.7 50.5 51.1 51.5 51.7 Computers, Inc. 19.63 21.50 Industry Index 54.1 54.0 53.9 53.7 54.8 54.5 54.6 54.1 54.2 54.8 54.2 54.8 54.9 55.2 55.7 56.1 56.7 56.7 56.5 56.1 Computers, Inc. 19.63 20 20.50 21 2 3 4 23 23.13 25 26 27 28 29 30 21.13 6 7 8 9 25.25 26.25 27 27.50 28 28.50 28 27.50 29 29.25 29.50 30 28.50 27.75 28 21.88 22.50 23.13 23.88 24.50 23.25 22.13 51.7 52.2 52.0 53.1 53.5 53.9 53.6 52.9 53.4 32 20.63 20.25 19.75 18.75 17.50 34 35 36 37 38 39 40 20