1. Classify the following events as mostly systematic or mostly unsystematic. Is the distinction clear in every case?

1. Short-term interest rates increase unexpectedly. (5 points)
2. The interest rate a company pays on its short-term debt borrowing is increased by its bank. (5 points)
3. Oil prices unexpectedly decline. (5 points)
4. An oil tanker ruptures, creating a large oil spill. (5 points)
5. A manufacturer loses a multimillion-dollar product liability suit. (5 points)
6. A Supreme Court decision substantially broadens producer liability for injuries suffered by product users. (5 points)