A vaccine is claimed to be effective in preventing a rare disease that occurs in about one of every 100,000 people. Explain why a randomized clinical trial comparing 100 people who get the vaccine to 100 people who do not get it is unlikely to be worth doing. Explain how you could use a case-control study to investigate the efficacy of the vaccine.
Answer to relevant QuestionsExercise 1.10 discussed a study at Yale University’s Infant Cognition Center. Researchers were interested in determining whether infants had the ability to distinguish between the actions of helping and hindering. Each ...In Example 8 about Down syndrome, we estimated the probability of a positive test result (predicting that Down syndrome is present) to be P(POS) = 0.257, based on observing 1355 positive results in 5282 observations. How ...For events A, B, and C, explain why P(A and B and C) = P(A) × P(B |A) × P(C | A and B). A single random digit is selected using software or a random number table. a. State the sample space for the possible outcomes. b. State the probability for each possible outcome, based on what you know about the way random ...A survey asks subjects whether they believe that global warming is happening (yes or no) and how much fuel they plan to use annually for automobile driving in the future, compared to their past use (less, about the same, ...
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