Are college students who take a freshman orientation course more or less likely to stay in college than those who do not take such a course? The article “A Longitudinal Study of the Retention and Academic Performance of Participants in Freshmen Orientation Courses” (Journal of College Student Development : 444– 449) reported that 50 of 94 randomly selected students who did not participate in an orientation course returned for a second year. Of 94 randomly selected students who did take the orientation course, 56 returned for a second year. Construct a 95% confidence interval for p1 = p2, the difference in the proportion returning for students who do not take an orientation course and those who do. Give an interpretation of this interval.
Answer to relevant QuestionsThe article “Truth and DARE: Tracking Drug Education to Graduation” (Social Problems : 448– 456) compared the drug use of 288 randomly selected high school seniors exposed to a drug education program (DARE) and ...Are very young infants more likely to imitate actions that are modeled by a person or simulated by an object? This question was the basis of a research study summarized in the article “The Role of Person and Object in ...From the given information in each case below, state what you know about the P-value for a chi-square test and give the conclusion for a significance level of a = .01. a. X2 = 7.5, df = 2 b. X2 = 13.0, df = 6 c. X2 = 18.0, ...The paper “Contemporary College Students and Body Piercing” (Journal of Adolescent Health : 58–61) described a survey of 450 undergraduate students at a state university in the southwestern region of the United ...Each person in a large sample of German adolescents was asked to indicate which of 50 popular movies they had seen in the past year. Based on the response, the amount of time (in minutes) of alcohol use contained in the ...
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