Homework 5

Due Date: Tuesday, June 7, 2005
Points: 100

Some questions ask you to justify statements made in proofs, or to prove statements. Please make your justifications rigorous rather than justifying what is happening at a high level.

1. (10 points) Text, section 9.8, exercise 2. You are to use the statistical method shown in the example on pp. 220-221. Is the most likely key the correct one?
2. (20 points) Text, section 9.8, exercise 12
3. (20 points) Text, section 9.8, exercise 22
4. (10 points) Text, section 15.9, exercise 6
5. (10 points) Text, section 18.6, exercise 6
6. (10 points) Text, section 24.11, exercise 2
7. (20 points) Text, section 24.11, exercise 9