In Chapter 6, we discussed how an understanding of probability allows one to properly interpret the results of medical screening tests. The use of Bayes’s Law requires a set of prior probabilities, which are based on historical records. Suppose that a physician wanted to estimate the probability that a woman under 35 years of age would give birth to a Down syndrome baby. She randomly sampled 200 births and discovered only one such case. Use the Wilson estimator to produce a 95% confidence interval estimate of the proportion of women under 35 who will have a Down syndrome baby.
Answer to relevant QuestionsSpam is of concern to anyone with an e-mail address. Several companies offer protection by eliminating spam e-mails as soon as they hit an inbox. To examine one such product, a manager randomly sampled his daily e-mails for ...An important decision faces Christmas holiday celebrators: buy a real or artificial tree? A sample of 1,508 male and female respondents 18 years of age and over was interviewed. Respondents were asked whether they preferred ...a. Estimate with 90% confidence the number of American adults who were working full time.b. Estimate with 95% confidence the number of American adults who were unemployed, or laid off. (WRKSTAT: 1 = Working full time, 2 = ...Estimate with 95% confidence the number of Americans who consider themselves moderates (POLVIEW3: 1 = liberal, 2 = moderate, 3 = conservative).ANES2008* Estimate with 95% confidence the number of American adults who do not have health insurance (HEALTH: 1 = Yes, 5 = No).
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