In a random sample of 35 criminals convicted of a certain crime it was determined that the mean lengths of sentencing was 66 months with standard deviation of 10 months construct and interpret 95% confidence interval for the mean length of sentencing for this crime

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