In a survey conducted by a retail store, 58% of the sample respondents said they prefer to shop at places with loyalty cards. If the margin of error is 3.49, the expected population proportion that prefers to shop at places with loyalty cards is between
96
and
96.

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