题目
Which of the following statements about hypothesis testing is correct?
选项
A.The null hypothesis is the condition a researcher hopes to support.
B.The alternative hypothesis is the proposition considered true without conclusive evidence to the contrary.
C.The alternative hypothesis exhausts all potential parameter values not accounted for by the null hypothesis.
答案
C
解析
： C is correct. Together, the null and alternative hypotheses account for all possible values of the parameter. Any possible values of the parameter not covered by the null must be covered by the alternative hypothesis (e.g., H0: θ ≤ 5 versus Ha: θ > 5). ： C正确。总的来说，原假设和备择假设解释了参数的所有可能值。任何没有被原假设覆盖的参数值都必须被备择假设覆盖，例如：(e.g., 原假设: θ ≤ 5 ，备择假设: θ > 5).