题目
Which of the following statements regarding a one-tailed hypothesis test is correct?
选项
A.The rejection region increases in size as the level of significance becomes smaller.
B.A one-tailed test more strongly reflects the beliefs of the researcher than a two-tailed test.
C.The absolute value of the rejection point is larger than that of a two-tailed test at the same level of significance.
答案
B
解析
： B is correct. One-tailed tests in which the alternative is “greater than” or “less than” represent the beliefs of the researcher more firmly than a “not equal to” alternative hypothesis. ： B正确。 相比于双尾检验，在显著性水平一致的情况下，单尾检验在尾部的显著性水平更大，拒绝原假设的概率更大。