Problem 12-20 The following table contains data on market advances and declines. Day 2 3 4 5 Advances 1,056 843 721 788 459 Declines 1,039 1,050 1,074 1,538 1,095 Day 6 7 8 9 10 Advances 989 1,192 941 1, 135 785 Declines 892 1,179 722 928 766 a. Calculate cumulative breadth. (Negative amounts should be indicated by a minus sign.) Day Advances Declines Net Advances Cumulative Breadth 1 1,056 843 2 3 721 788 1,039 1,050 1,074 1,538 1,095 4 5 459 6 989 892 7 1,192 941 1,135 1,179 722 8 9 928 766 10 785