老师，第5题和6题的，beta小，为什么风险小没明白；6题说badtime情况，视频里面老师说回到正常情况，题目里面哪句话能看出再问正常市场的情况？

押題q32 am I correct to indicate below? I think the video Indicated wrong on answer B and D Illquidity assets - infrequent trade - low volatility - overestimate Sharpe ratio but underestimate beta and standard derivation Liquidity asset - normal beta high volatility normal sharpe ratio

29 why is preferred stock of the return 3% call cost here ? But not return ???

Question 28, the lower confidence level means it reduce from 99% to 95% isn’t it the right area ( accept zone has been reduce 4 %? Which means T1 error increase ???

Question 28, the lower confidence level means it reduce from 99% to 95% isn’t it the right area ( accept zone has been reduce 4 %? Which means T1 error increase ???

押题7：老师好， 请问KMVmodel中算dd的时候分母中的V是用当前价值还是expect value，如果题目中给了当前的V和expect v，请问用哪个？

算违约概率都是单尾吗？只有H0=的假设检验是双尾吗？

请问在这道题中，deliver the reference asset是发生在0时刻是吗？

老师好，可以补充一下model 1, model2, Ho-lee, Vasicek, Model3, CIR, lognormal, Salmon, Black-Kxxx这几个模型下，short-term rate volatility(yield volatility)的假设吗？哪些是假设constant的，哪些是假设decreasing的。谢谢

老师问下general collateral是OTR吗?