2021年备考CFA每日一练来了，在数量分析中是有很多的知识点的，那在CFA考试中你能不能做对这道CFA考试题呢？
Which of the following statements is correct with respect to the null hypothesis?
A. It is considered to be true unless the sample provides evidence showing it is false.
B. It can be stated as "not equal to" provided the alternative hypothesis is stated as "equal to."
C. In a two-tailed test, it is rejected when evidence supports equality between the hypothesized value and population parameter.
答案：A is correct.
The null hypothesis is the hypothesis to be tested. The null hypothesis is considered to be true unless the evidence indicates that it is false, in which case the alternative hypothesis is accepted.
解题思路：
A选项说的是，如果没有证据证明原假设是错误的，那么就认为原假设是真的。这个描述是正确的。
B选项的意思是，原假设可以是包含“≠”符号的，备择假设可以是包含“=”符号的，这是错误的，我们一般认为“=”都是存在在原假设中的。
C选项说的是，在双尾检验中，当证据证明假设值跟总体参数相同时拒绝原假设，这是错误的。原版书的描述是：We reject the null in favor of the alternative if the evidence indicates that the population parameter is either smaller or larger than θ0.
就是说，当证据证明假设值跟总体参数相同时，我们应该不拒绝原假设。所以C选项错误。
在备考中你是不是正是需要CFA考试题呢？这边有CFA专题练习，有需要的考生可以看看给你推荐的课程哦！
