College Football A stem-and-leaf plot for the number of touchdowns scored by all NCAA Division I Football Bowl Subdivision teams is shown. If a team is selected at random, find the probability the team scored

(a) at least 51 touchdowns,

(b) between 20 and 30 touchdowns, inclusive, and

(c) more than 69 touchdowns. Are any of these events unusual? Explain. (Source: NCAA) 1 8 8 9 Key: 2 1 1 3 4 4 5 5 6 6 7 7 8 8 9 9 3 0 1 1 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 7 7 7 7 8 8 9 9 9 4 0 0 0 0 1 2 2 2 2 3 3 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 6 7 7 7 8 8 8 8 8 9 9 9 5 0 0 0 0 1 1 2 2 2 2 4 5 5 5 6 6 7 9 6 0 0 1 2 2 3 4 5 6 8 9 7 6 7