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Presentation transcript:

Complete the following slides to get credit

http://www.ruf.rice.edu/~lane/stat_sim/conf_interval/ What happens to the length of the CI when the sample size increases? Answer:

http://bcs. whfreeman. com/ips4e/cat_010/applets/confidenceinterval http://bcs.whfreeman.com/ips4e/cat_010/applets/confidenceinterval.html What happens as you confidence level increases? Answer:

Sketch the sampling distribution of xbar. Pop is N(10,4) Sketch the sampling distribution of xbar. Pop is N(10,4). Sample size is 16. Under the distribution sketch 3 95% CI with sample means 11, 9.5 and 12. How many capture the true mean? What is the Margin of Error?

Find a sample size so that the ME of the last slide is not more than 1.