Pancken Corp. has never operated outside the country it is based in and wants to open a branch in a different country. It plans on sending some of its employees to the new country. Before doing so, it trains all its employees by showing them videos about the new country. It also guides them in taking part in roleplays where they are presented with real-world situations related to the new country. In the context of preparing for an international assignment, when would this type of training be given to employees?

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.