问题如下：
Ida Lee and his team collect a lot of analysis of statistical data about the car market. According to the data, they come to the conclusion that the mean price of SUV is more than $46,435 in his country. Then they randomly select 64 SUVs whose mean price is $46,470. Assume the standard deviation of the population is 1370. Ida Lee conducts a hypothesis test to check their conclusion. Which of the following test is least appropriate ?
选项：
A.One-tailed test.
B.Two-tailed test.
C.One-sided test.
解释：
B is correct.
The null hypothesis is: H0: μ≤ $46,435, then Hα: μ＞$46,435, which indicates it is a one-tailed test, also called one-sided test.
这题没明白啊，为什么不可以假设μ0=46370，μa≠46470
