Motivation of drug dealers. Refer to the Applied Psychology in Criminal Justice (September 2009) investigation of the personality characteristics of drug dealers, Exercise 2.8 (p. 80). Convicted drug dealers were scored on the Wanting Recognition (WR) Scale— a scale that provides a quantitative measure of a person’s level of need for approval and sensitivity to social situations. (Higher scores indicate a greater need for approval.) Based on the study results, we can assume that the WR scores for the population of convicted drug dealers has a mean of 40 and a standard deviation of 5. Suppose that in a sample of 100 people, the mean WR scale score is
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