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In the 1980s it was generally believed that autism affected about 5% of the nation's children. Some people believe that the increase in the number of chemicals in the environment has led to an increase in the incidence of autism. A recent study examined 384 children and found that 46 of them showed signs of some form autism
Is this strong evidence that the level of autism has increased?
a) Write appropriate hypotheses.
b) Check the necessary assumptionsc) Perform the mechanics of the test. What is the Pvalue?d) explain what the pvalue means in the contexte) what is your conclusion?f) do environment chemicals cause autism?
Do you think it is possible that another great depression could happen? Given the ups and downs of our unemployment rate and recession, do you see this as a possibility?
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which of the following was true of the Webster Ashburton treaty?
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Reconstruction was a time of political upheaval, resentment between the North and the South, and government and social uncertainty about how to ensure freedom and equality for newl
Examine the political cartoons drawn by Thomas Nast. Select a cartoon and write a blog in which you analyze the symbols contained in it. How does the cartoon convey an opinion? Why
What effect did the Scientific Revolution have on the Enlightenment? Answer a)European intellectuals applied the new worldviews to challenge the authority of the Church. b
What techniques and methods did Charlemagne use to govern his vast empire? How well did his empire function?
What was the role of the Supreme Court in the demise of Jim Crow? The Executive branch? And, Congress? Why were these actions necessary?
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