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.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals