问题如下:
1. The appropriate alternative hypothesis is:
选项:
A.
HA: μ < $280,000.
B.
HA: μ ± $280,000.
C.
HA: μ ≥ $280,000.
D.
HA: μ > $280,000.
解释:
D is correct.
考点:Alternative Hypothesis Test
解析:原假设H0:u<= 280,000 HA: μ > $280,000
把想要检验的内容放在原假设。为什么这道题目不是H0>=280,000; Ha<280,000?