One advantage of the correlated-groups t test over the independent-groups t test is that it reduces the error variance due to

a. the degrees of freedom.
b. the independent variable.
c. the dependent variable

The car salesman from the US that was interviewed in this video has a weekend job. What is that weekend job?

a. a DJ b. a worker at a fast-food restaurant c. a retail store manager d. a health care worker

Terminals are located at the end of ______

a. nuclei c. dendrites b. axons d. somas