问题
单项选择题
If the null hypothesis is H0:ρ≤0, what is the appropriate alternative hypothesis()
A. Hα:ρ＜0.
B. Hα:ρ=0.
C. Hα:ρ＞0.
答案
参考答案：C
解析：
The alternative hypothesis must include the possible outcomes the null does not.
