1. What is the standard deviation of returns for Rockland, Inc. if it earns a return of 24% when the economy is booming and -6% when it is in a recession. The probability of a boom is 0.55 and the probability of a recession is 0.45.

2. What is the internal rate or return for a three-year project that requires an initial outlay of $325,000 and that produces cash flows of $155,000 at the end of the first two years followed by a final cash flow of $50,000 at the end of the third year?

3. Arturo, Inc. has a profit margin of 2.50%, sales of $850,000, and assets of $531,250. What is its return on assets?

4.Enfield, Inc. issued fifteen-year 3.50% coupon bonds that pay interest semi-annually four years ago. The bonds are currently priced at $108.36. What is the yield to maturity?