Sophie drove for 238 miles, correct to the nearest mile. She used 26.3 litres of petrol, to the nearest tenth of a litre. Work our the upper bound for the petrol consumption for sophies journey. Give your answer correct to 2 decimal places.

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