-2/x^2-4 + x-1/x^2-2x
1: What is the problem? What do you need to find or do? What will your final answer look like?
2: What have they told you? What does it mean? What more do you know or can you figure out? What connections can you make?
3: Solve by showing steps towards completing the problem, including writing/using equations.
4: final answer

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect