题目不太懂，两个账面价值怎么理解？

这道题题目怎么理解？赎回一个帐面价值1000000的债卷，帐面价值是990000？

从哪里看出来不能回转？

sampling distribution是啥？ 然后中值定理到底是说，在样本大的情况下，样本的分布服从正态分布？还是样本的μ服从正态分布？

题目没问题，不过这个附加解释不懂，貌似几个地方都有这个decimal的说法. By convention, forward points are scaled so that ±1 forward point corresponds to a change of ±1 in the last decimal place of the spot exchange rate.

unbiased，无偏性是什么意思呀？

Which of the following is not the reason why the priority of claims is not perfect? A Senior creditors compromised. B The value of secured assets was less than the amount of the claims. C The judge's order resulted in actual claims not adhering to strict priority of claims. B为啥不对？

请问那个mortgage payment是什么呢

为什么不适用1+HPR=e^(RxT)这个公式呢

这题比视频课上的题目多了3σ这个条件，答案算出来也不一样了，想问一下，为啥不能用2.58σ来算呢？不是也说是99%的CI么