Assume that you want to estimate the mean age of cars driven by students at your college.
Question:
Assume that you want to estimate the mean age of cars driven by students at your college. A previous study shows that the standard deviation of those ages is approximately 3.7 years. How many car ages must you randomly select in order to be 95% confident that your sample mean is within 1 year of the population mean? Using that sample size, collect your own sample data, consisting of the ages of cars driven by students at your college. Then use the methods of this section to construct a 95% confidence interval. Write a statement summarizing your results.
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Taking the population standard deviation is s and the sample standard deviation is s The sample size ...View the full answer
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Related Book For 
Statistical Reasoning For Everyday Life
ISBN: 978-0134494043
5th Edition
Authors: Jeff Bennett, William Briggs, Mario Triola
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