• Classify the following events as mostly systematic or mostly unsystematic. Is the distinction clear in every case?
• Short-term interest rates increase unexpectedly.
• The interest rate a company pays on its short-term debt borrowing is increased by its bank.
• Oil prices unexpectedly decline.
• An oil tanker ruptures, creating a large oil spill.
• A manufacturer loses a multimillion-dollar product liability suit.
• A Supreme Court decision substantially broadens producer liability for injuries suffered by product users.