关于书剑帖在信吧是否秒精(即书剑发帖时间与加精时间差值显著少于信吧总体发帖时间与加精时间差值) 因为有米肯吧主的真相数据图,我们不妨做个假设检验(t检验): H0: 书剑发帖时间与加精时间差值不少于信吧总体发帖时间与加精时间差值; H1: 书剑发帖时间与加精时间差值少于信吧总体发帖时间与加精时间差值; 统计及检验结果: Two-sample T for Shujian vs General N Mean StDev SE Mean Shujian 5 457 564 252 General 27 4649 8069 1553 Difference = mu (Shujian) - mu (General) Estimate for difference: -4192 95% upper bound for difference: -1513 T-Test of difference = 0 (vs <): T-Value = -2.66 P-Value = 0.006 DF = 27 结论: P<Alpha, 拒绝H0,故书剑发帖时间与加精时间差值显著少于信吧总体发帖时间与加精时间显著差值(即秒精);