答案和详解如下: 
 Q11. A 3-month loan has a holding period yield of 1.5%. What is the annual yield of this loan on a bond-equivalent basis?  A)   6.05%. B)   6.65%. C)   3.02%. Correct answer is A) First, the 3-month yield must be converted to a semiannual yield. The result is then doubled to obtain the bond-equivalent yield. Semiannual yield = 1.0152 − 1 = 0.030225. The bond-equivalent yield = 2 × 0.030225 = 0.06045. Q12. What is the effective annual yield of a T-bill that has a money market yield of 5.665% and 255 days to maturity?  A)   5.92%. B)   4.01%. C)   5.79%. Correct answer is C) Holding Period Yield = 4.0127% = 5.665% × (255 / 360) Effective Annual Yield = (1.040127)365/255 = 1.0571 − 1 = 5.79%. Q13. A Treasury bill has 90 days until its maturity and a holding period yield of 3.17%. Its effective annual yield is closest to: A)   13.49%. B)   13.30%. C)   12.68%. Correct answer is A) The effective annual yield (EAY) is equal to the annualized holding period yield (HPY) based on a 365-day year. EAY = (1 + HPY)365/t − 1 = (1.0317) 365/90 − 1 = 13.49%. Q14. A Treasury bill, with 45 days until maturity, has an effective annual yield of 12.50%. The bill's holding period yield is closest to: A)     1.46%. B)     1.57%. C)     1.54%. Correct answer is A) The effective annual yield (EAY) is equal to the annualized holding period yield (HPY) based on a 365-day year. EAY = (1 + HPY)365/t − 1. HPY = (EAY + 1)t/365 − 1 = (1.125)45/365 − 1 = 1.46%.   
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