问题如下：
What is the critical value in a hypothesis test?
选项：
解释：
The critical value determines the rejection region for a test. Test statistics larger than the critical value indicate the null should be rejected in favor of the alternative.
Test statistics larger than the critical value indicate the null should be rejected in favor of the alternative.
如果是2 tailed，此说法会不会不够严谨呢？
