(30 MARKS QUESTION ONE Zanele has just begun her new job as on the sales force of a very competitive company. In a sample of 16 sales asít was found that she dosed the contract for an average value of 103 with a standard deviation of R12. Test at 5% significance that the population mean is at least R100 and against the alternative that it is less than R100. Company policy requires that new members of the sales force must exceed an average of R100 per contract during the trial employment period. Can we conclude that Zanele has met this requirement at the significance level of 95%​

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