Identify five Greek roots or suffixes in the passage. Write a sentence to describe each one; tell how the root or suffix is used and what it means. Dear Nana, We will be visiting you this summer, and I will have so much to tell you about the school year. Thank you for the books you sent for my birthday! I especially liked the ones about mythology because the collage of photographs was interesting. I will call you on the telephone soon! Love, Keisha

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.