Morgan is interested in exploring the kinds of behaviors that people engage in at their gyms. she observes and records how much time they spend on aerobic activity, how much on resistance training, and how much on activities other than exercise, such as conversation or resting. she is conducting a(n):

Lots of points: economics: the is the dollar value of all final goods and services produced within a country’s borders within a given year. a. gross domestic product b. business cycle c. inflation rate d. net exports

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

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.