习题集的135 页 题目是 What is the main reason why convertible bonds are generally issued with a call? The answer is: to force conversion if in-the-marney 我不太懂后面的解释，the answer does not really explains 请老师讲解 谢谢

老师，图片中的公式不是说利率上升，期货价格上升吗 但是下面这个题目的答案是利率上升使得期货价格下降 A German housing corporation needs to hedge against rising interest rates. It has chosen to use futures on 10-year German government bonds. Which position in the futures should the corporation take, and why? A、Take a long position in the futures because rising interest rates lead to rising futures prices. B、Take a short position in the futures because rising interest rates lead to rising futures prices. C、Take a short position in the futures because rising interest rates lead to declining futures prices. D、Take a long position in the futures because rising interest rates lead to declining futures prices. 答案：C 解析： Government bond futures decline in value when interest rates rise, so the housing corporation should short futures to hedge against rising interest rates.

这里老师说算样本标准差要会用计算器，但是没有具体讲。请演示一下计算器算的步骤。

还是接我刚才问的那道题，这是讲义上的解释，这里都说0.025对应的是一个双尾的区间，为什么题目中条件是95%，给的单尾表，又要选2.5%，逻辑对不上啊。

这里选的2.201是什么含义？是指单边2.5%围住的面积？还是单边2.5%对应的高度？还是中间部分的面积或者什么？

老师，多元线性回归AVOVA Table 中， n表示的是样本个数？k表示的解释变量个数吗？k中包含截距项吗

95%的置信区间，双尾时一边一半，单尾时全在一边。这里给的是单尾表，为什么不是选5%，却要选2.5%？2.5%的单尾不应该对应1.25%的双尾吗？

请问BSMmodel d1，2这个公式考的几率有多大啊， 太难记了

It is June 2 and a fund manager with USD 10 million invested in government bonds is concerned that interest rates will be highly volatile over the next three months. The manager decides to use the September Treasury bond futures contract to hedge the value of the portfolio. The current futures price is USD 95.0625. Each contract is for the delivery of USD 100,000 face value of bonds. The duration of the manager’s bond portfolio in three months will be 7.8years. The cheapest-to-deliver bond in the Treasury bond futures contract is expected to have a duration of 8.4 years at maturity of the contract. At the maturity of the Treasury bond futures contract, the duration of the underlying benchmark Treasury bond is nine years. What position should the fund manager undertake to mitigate his interest rate risk exposure? A、Short 94 contracts B、Short 96 contracts C、Short 98 contracts D、Short 105 contracts 答案：C 老师，请问这题标的资产的久期为什么用7.8年，而不用9年呢？

假设一年365天，如果到期日前一天拿到了十块钱，相当于多持有10块钱一天，多拿了第365天的利息。是不是最后要扣除这天的利息？全价和净价说的是这个事吗