1. Scenario C. A researcher is interested in studying whether social media can influence FOMO (fear of missing out). She randomly assigns participants to scroll through social media for 2 hours per day for one week or to use no social media for one week and then compares their overall feelings of FOMO. What would be a Type I error for this scenario?

2. Scenario C. A researcher is interested in studying whether social media can influence FOMO (fear of missing out). She randomly assigns participants to scroll through social media for 2 hours per day for one week or to use no social media for one week and then compares their overall feelings of FOMO. What would be a type II error for this scenario?

3. Scenario D. A professor is interested in examining whether giving several small exams, rather than two large exams, improves student grades in her course. She has her Tuesday Research Methods I class take 6 small exams over the course of the semester and she has her Thursday class take 2 big exams. She then compares their final course grades. Should we test this using a directional or non-directional hypothesis?

4. Scenario D. A professor is interested in examining whether giving several small exams, rather than two large exams, improves student grades in her course. She has her Tuesday Research Methods I class take 6 small exams over the course of the semester and she has her Thursday class take 2 big exams. She then compares their final course grades. What is the null hypothesis for this scenario?