The security guard at a movie theater observed that approximately 18% of the 600 cars in the parking lot are from out of state. Which is the best estimate for the
number of cars in the parking lot that are from out of state?
A. 400
C. 200
B. 120
D. 12

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