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1. Testing the null hypothesis that the slope of the true regression line equals zero is equivalent to testing whether the true coefficient of correlation could be zero. Why?
2. For n 5 15 data points, r2 5 0.81. At the 0.05 level of significance, can we conclude that the true coefficient of correlation could be zero?
3. For n 5 37 data points, r2 5 0.29. At the 0.02 level of significance, can we conclude that the true coefficient of correlation could be zero?
4. Based on sample data, the 90% confidence interval for the slope of the population regression line is found to be from -2.5 to 1.4. Based on this information, what is the most accurate statement that can be made about the p-value in testing H0: /31 5 0 versus H1: /31 * 0? Explain.
Over the past 30 years, the rate of obesity has increased dramatically in the United States. Name TWO potential explanations for this, and describe how you might conduct research to investigate these hypotheses.
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In 1996, President Bill Clinton enacted the Personal Responsibility and Work Opportunity Act, thereby reforming the welfare system. What are the long-term effects, negative and/or positive, of this change
Discuss in your own words, how to set up a p- value to test hypothesis. Discuss in your own words, how to set up a critical region to test hypothesis.
Write a paper about your job as a Director of Health Information Management. What topics would you include in your presentation? What would you include in the brochure that addresses educational requirements and career opportunities of a health in..
"Describe Truman"s goals in his Fair Deal domestic policy. Evaluate his successes and failures in accomplishing those goals.
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