Imagine you design a study to see if a new organizational policy on sexual harassment is effective. Through random assignment, you train half of the department using the old policy, and half using the new policy, and test to their comprehension of appropriate and inappropriate behaviors in the workplace.
What is the appropriate t-test to use?

The appropriate test to use is independent t-test (also known as two sample t-test) in order to make a comparison between the means of the two independent groups used in the study.

Explanation:

In designing the study, independent t-test can be used to evaluate the statistical difference between the mean of half of the department population using the old policy, and the mean of the other remaining half of the population using the new policy in order to evaluate their understanding of both (constituting a broad range) appropriate and inappropriate behaviors in the workplace. The statistical result will provide evidence that would indicate whether a new organizational policy on sexual harassment is effective.