Researchers at Georgia State University investigated the per…
Researchers at Georgia State University investigated the personality characteristics of drug dealers in order to shed light on their motivation for participating in the illegal drug market (Applied Psychology in Criminal Justice, Sept. 2009). The sample consisted of 100 convicted drug dealers who attended a court-mandated counseling program. Each dealer was scored on the Wanting Recognition (WR) Scale, which 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.) The sample of drug dealers had a mean WR score of 39, with a standard deviation of 6. Assume the distribution of WR scores for drug dealers is bell-shaped and symmetric. What is the WR score for a drug dealer with a z-score 0.75? (keep two decimal place for your answer)
Read DetailsYou take three 100-point exams in your statistics class and…
You take three 100-point exams in your statistics class and score 80, 85 and 95. The last exam is much easier than the first two, so your professor has given it less weight. The weights for the three exams are: Exam 1: 35 % of your grade. (Note: 35% as a decimal for weight is .35) Exam 2: 35% of your grade. Exam 3: 30 % of your grade. What is your final weighted average for the class? (keep two decimals for the answer)
Read DetailsNinety-eight percent of all babies survive delivery. However…
Ninety-eight percent of all babies survive delivery. However, 15 percent of all births involve Cesarean sections, and when a C-section is performed the baby survives 96 percent of the time. Let C denote the event where a C-section is performed and let S denote the event of the baby survives the delivery. Write the symbols for the following probability: the probability of a baby survives the delivery if (given) the C-section is performed.
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