Aprism with a volume of 3125 ft³ is scaled down to a volume of 200 ft³. what is the scale factor? enter your answer, as a decimal or a fraction in simplest form, in the box. i think it's 2/5 or 0.4

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