问题如下图：
选项：
A. 
B. 
C. 
解释：
这是双尾还是单尾检验？好像除了F检验，一般都是双尾。而且如果不是双尾，关键值也不会是1.96。但如果是双尾，-2.3不是落在拒绝域吗？不是应该是：小于-1.96
NO.PZ2015120204000007 significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statistinot significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statisti B is correct. Because the absolute value of t = -2.3017 is greater th1.96, the correlation coefficient is statistically significant. criticvalue +/-1.96
NO.PZ2015120204000007 您好，这道题我完全不明白，貌似对应的视频没有讲过这部分。麻烦给出具体对应的视频。题干都不是很懂（t test什么的）
NO.PZ2015120204000007 significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statistinot significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statisti B is correct. Because the absolute value of t = -2.3017 is greater th1.96, the correlation coefficient is statistically significant. 既然是双尾检验，那么a也应该是对的呀
NO.PZ2015120204000007 老师这道题如何判断什么是原假设呢，因为题干说的是termine whether the sample correlation between the StellanCPIENG variables is statistically significant.我自己的直接理解原假设就是这两个事情的相关性是significant的，这样对吗，所以T-TEST的值落在拒绝域里，那应该拒绝原假设，即相关性是不significant的，这样的逻辑错在哪了呢？
significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statistinot significant, because the calculatetest statistic ha higher absolute value ththe criticvalue for the test statisti B is correct. Because the absolute value of t = -2.3017 is greater th1.96, the correlation coefficient is statistically significant. t统计量不是双尾检验，拒绝域是小于-critvalue 和大于critvalue -2.3小于1.96就行，答案b是什么意思呢？
