An independent-measures study uses two samples, each with n = 10, to compare two treatment conditions.What is the df value for the t statistic for this study?

According to research on finger tapping, our peak in fine motor coordination and speed of movement usually occurs at

A. 8-10 years B. 18-20 years C. 28-30 years D. 38-40 years

The amygdala plays a key role in emotion, especially fear

Indicate whether this statement is true or false.