High-risk behavior. In the National AIDS Behavioral Surveys sample of 2673adult
Chapter 0, Problem 20.12(choose chapter or problem)
High-risk behavior. In the National AIDS Behavioral Surveys sample of 2673adult heterosexuals, 5 respondents had both received a blood transfusion and hada sexual partner from a group at high risk of AIDS.(a) You should not use the large-sample confidence interval for the proportion pin the population who share these two risk factors. Why not? (b) The plus four method adds four observations, two successes and two failures.What are the sample size and the count of successes after you do this? What is theplus four estimate p of p?(c) Give the plus four 95% confidence interval for p.
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