In each case, find elements a and b from a group such that lal |b| = 2. %3D a. Jab| = 3 b. lab| = 4 c. Jab| = 5 Can you see any relationship among |al, \bl, and lab|?

The Wilcoxon paired signed ranks test a. Is used with a correlated groups design b. Uses both the magnitude and direction of the data c. All of the answers d. Is used with data that is ordinal In scaling

3. Consider D(Z2), the space of 7-bar LED display characters defined in lesson 7. Let S={do, d1, d2, d3, d₁, d5} CD(Z2) where do is the character that displays a "0", d₁ is the character that displays a "1", etc; see figure 1. Can de be written as a linear combination of elements from S? 8 18888 Figure 1: The set S = {do,..., ds}. 8 Figure 2: de, character display for "6".

Please explain thoroughly. Discrete mathematics