题目
Which of the following statements is correct with respect to the null hypothesis?
选项
A.It can be stated as “not equal to” provided the alternative hypothesis is stated as “equal to.”
B.Along with the alternative hypothesis, it considers all possible values of the population parameter.
C.In a two-tailed test, it is rejected when evidence supports equality between the hypothesized value and population parameter.
答案
B
解析
B is correct. The null hypothesis and the alternative hypothesis are complements of one another and together are exhaustive; that is, the null and alternative hypotheses combined consider all the possible values of the population parameter. B是正确的。原假设和备择假设是相互补充的，一起是详尽的；也就是说，原假设和备择假设结合考虑所有可能的值的人口参数。