A restaurant launches a mobile app that allows customers to rate their food on a scale from -5 to 5 . Customers gave the lasagna scores of 2.25 , -3.5 , 0 , -4.5 , 1.75 , -1 , 3.5 , and -2.5 . Then the restaurant receives additional scores of -0.75 , -1.5 , -1.25 , 4.75 , -0.25 , -0.5 , 5 , and -0.5 for the lasagna. Given the additional data, should the restaurant consider changing the recipe?

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