Use the following values from a student's t-distribution to establish a 95% confidence interval for the population mean given a sample size of 10, a sample mean of 6.25, and a sample standard deviation of 12. Assume that the population from which the sample is drawn is normally distributed and the population variance is not known. The 95% confidence interval is closest to a: A Lower bound of –2.33 and an upper bound of 14.83. B Lower bound of –0.71 and an upper bound of 13.21. C Lower bound of –2.20 and an upper bound of 14.70. 这题为什么选2.262这个系数？为什么选这个自由度？

原版书137页55题不懂

第11题，不明白答案中为什么要用除法，是和几何收益率有关吗？

难道没有时间价值吗？

你好，这个28题，好像讲课里面没有说到?请查明下，那是否需要掌握，看了答案，我也不是很理解，谢谢，

老师，43题为什么库存要用均值来算，而成本不用均值来算。

你好，原版书题目，有一些是这样题目，不是选择题，这一类是否需要去做和掌握？我目前主要是做选择题部分。

老师你好。According to IFRS, the deferred tax consequences of revaluing held-for-use equipment upward is reported on the balance sheet (C) C. in shareholders' equity 答案解释中写到：the differed tax consequences of revaluing an asset upward under IFRS are reported in shareholders' equity. 为什么在IFRS下，将资产重新估值的结果计入B/S表中？

刚参加网校培训。咨询哪里可以download ppt？谢谢

第28题，不明白题目中的1.05和0.95的含义，看了答案也不明白答案中的数据是怎么算出来的…