When statisticians describe pooling the variances, they mean: taking the average of the two variances disregarding sample size. adding the variances of the two samples. taking the average of the two variances accounting for sample size. adding the standard deviations of the two samples.

How can a person be self justified he or she is proceeding in legal ways

Bonus question: according to wikipedia, in chinese philosophy yin and yang "describes how seemingly opposite or contrary forces may actually be complementary, interconnected, and interdependent." what are some examples from the story that amy tan may have intentionally incorporated elements of yin and yang philosophy into this story? select 2.

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?