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Should the treatments be given to everyone? Effective drugs for treating AIDS are very expensive, so most African nations cannot afford to give them to large numbers of people. Yet AIDS is more common in parts of Africa than anywhere else. Several clinical trials are looking at ways to prevent pregnant mothers infected with HIV from passing the infection to their unborn children, a major source of HIV infections in Africa. Some people say these trials are unethical because they do not give effective AIDS drugs to their subjects, as would be required in rich nations. Others reply that the trials are looking for treatments that can work in the real world in Africa and that they promise benefits at least to the children of their subjects. What do you think?
Determine the probability that sample mean will be greater than M=510. In symbols, what is p(M>510)? Determine the probability that sample mean will be greater than M=520.
Second inning 2006. Perhaps fans are just more interested in teams that win. The displays below are based on American League teams for the 2006 season.
More misinterpretations. An economist investigated the association between a country's Literacy Rate and Gross Domestic Product (GDP) and used the association to draw the following conclusions. Explain why each statement is incorrect. (Assume that..
An article in Real Estate Finance displays the following data for Brazil's short-term interest rates (in percent).1
What kind of test would be appropriate b) State the null and alternative hypotheses - Check the assumptions and conditions for inference
nine different colored flags are available to place on a pole one beneath another. the arrangement of the colors
Construct a 95% confidence interval for the population proportion of adult Americans who feel that crime is the main problem.
A study of the effects of skin tone (light, medium, and dark) on the severity of facial wrinkles in middle age might be of interest to cosmetic surgeons.
The national unemployment rate in a recent month was 4.9%. You think the rate may be different in your city, so you plan a sample survey that will ask the same.
Based on the following historical facts, create an imaginary primary source of 1-2 paragraphs that could corroborate some of these facts.
mimi just started her tennis class three weeks ago. on average she is able to return 15 of her opponents serves. let
James and his sister, Alice, each deliver 30 papers on their evening paper rounds and each are paid the same amount. one evening, Alison claims this system of equal payment to be unfair as her round takes on average longer than that of her brother..
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