You are forecasting sales for a company in the fourth quarter of its fiscal year. Your low- end estimate of sales is €14 million, and your high- end estimate is €15 million. You decide to treat all outcomes for sales between these two values as equally likely, using a continuous uniform distribution. A What is the expected value of sales for the fourth quarter? B What is the probability that fourth- quarter sales will be less than or equal to €14,125,000?

最后一道例题，求方差时是样本方差还是总体方差，题目中也没说清楚，怎么判断

bond introduction例题，老师说zero-coupon的I大于par bong的I，我脑子有点大。同时发行，zero-coupon bond与par bond 的Ri应一样，zero-coupon的B/S balance 不断增加，所以exp高，NI低，equity低。我理解的对不对？还是老师讲的我没转弯，请指导下。

老师好，系统设置的课程顺序，道德最前，时间久容易忘，这门在中间却是基础类的，请问这十门的合理学习顺序是什么呢，谢谢

老师麻烦解释一下第7题，没看懂解析，谢谢

A market has the following limit orders standing on its book for a particular stock: Trader C submits an immediate-or-cancel limit buy order for 700 shares at a price of $20.49, the average price the trader would pay is closest to: 问题一： immediate-or-cancel limit buy order 怎么理解？ 问题二：20.49 这个价格的含义是 低于20.49买哪，还是？ 您的回答没有显示，叫卢珏的老师，麻烦重新解答下

有一个点不是很明白，为什么想要本币贬值反而要卖本币呢？

T1时间点只买了一支65块的股啊，为什么是65*2

AGM的全称麻烦说一下

Chairman 和CEO分别代表什么意思？