Problem:
Keys Corporation's 5-year bonds yield 6.20% and 5-year T-bonds yield 4.40%. The real risk-free rate is r* = 2.5%, the inflation premium for 5-year bonds is IP = 1.50%, the liquidity premium for Keys' bonds is LP = 0.5% versus zero for T-bonds, and the maturity risk premium for all bonds is found with the formula MRP = (t - 1) × 0.1%, where t = number of years to maturity.
Required:
Question: What is the default risk premium (DRP) on Keys' bonds?
Note: Provide support for rationale.