1 A clinic has $1 million in revenues and $950,000 in costs. What is its operating margin?
2 The owners of the clinic in exercise 11.1 invested $400,000. What is the return on investment? Is it adequate?
3 A laboratory has $4.2 million in revenues and $3.85 million in costs. What is its operating margin?
4 The owners of the laboratory in exercise 11.3 invested $6 million. What is the return on investment?
5 View selected interest rates on the website of the Board of Governors of the Federal Reserve System (www.federalreserve. gov/releases/h15/). What is the current annual yield for one-year Treasury securities?
6 Go to the Yahoo! Finance website (finance.yahoo.com), and look up the operating margin and return on equity for Community Health Systems (symbol CYH). How does it compare to Pfizer (PFE), Amgen (AMGN), Laboratory Corporation of America (LH), and Tenet Healthcare Corporation (THC)?