老师好，这是咱们金程给的201712模考里的题目，也是咱们百题里的一道题目，但答案不一样。我认为是下面的模考题目答案（B）错了，应选C。不知是否是这样。

属于 NCA 那应该不影响流动性吧

An analyst wants to test whether the samples selecting from a population are random, he should choice: A B C 为什么用非参数检验呢？不符合老师课上说的3点

A hypothesis test has a p-value of 1.96%. An analyst should reject the null hypothesis at a significance level of: A 6%, but not at a significance level of 4%. B 3%, but not at a significance level of 1%. C 4%, but not at a significance level of 2%. 这题怎么想？

老师好 请问corporate fiannce视频更新在哪里了 我的目录里面一直没有

Investor believes that the mean price of houses in the area is greater than $135,000. A random sample of 25 houses in the area has a mean price of $139,750. The population standard deviation is $24,000. At a 1% level of significance, we should: A Reject the null hypothesis. B Fail to reject the null hypothesis. C Neither rejects nor fails to reject the null hypothesis. 这题答案是否错误？1%对应的应该是2.58吧？

off-balance sheet financing，在算debt-to-total assets时，为什么要调整debt到total assets呢？

Using the above data, an analyst is trying to test the null hypothesis that the population variances are equal（） against the alternative hypothesis that the variances are not equal （）at the 5% level of significance. The following table provides the F-distribution. Which of the following statements is most appropriate? The critical value is: A 9.60 and do not reject the null. B 7.15 and do not reject the null. C 6.39 and reject the null. 老师这种题是否需要掌握？

原版书后题第259页第2题，主要是A和C我认为都是一样的，因为是持有到期，那资本到期是固定PAR VALUE ，但是每期的COUPON 也是固定收到的，根据发行说好的COUPON RATE计算，这有什么风险? 所有东西都是固定的，没有提前赎回。

Which of the following statements about hypothesis testing is least accurate? A A type I error is to reject the null when it is actually true. B The significance level equals the probability of a Type I error. C A two-tailed test with a significance level of 5% has z-critical values of ±1.65. b有点不明吧，significance level 指的是两边的区域吧，可以定义为type1吗？