Calculate the degrees of freedom dfn = nCollege - 1 Find tcrit We can do this...
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Calculate the degrees of freedom dfn = nCollege - 1 Find tcrit We can do this by using R's qt function, which takes two arguments - - The first argument is the percentile you are looking for. So if you want the median value of distributed variable, you'd use .50. We want the .025th and the .975th (so that we get the 95% confidence interval). The second argument is the degrees of freedom, dfn. - Put them together: tcrit = qt(.975, dfn) Calculate the lower and upper bounds of the 95% confidence interval andprint them in your code chunk. Based on the 95% confidence interval, we can answer the question "is the population mean wage for college-educated workers equal to $1,200?" by testing the null hypothesis. Question: What is your answer to this question, in your own words, and why? Calculate the degrees of freedom dfn = nCollege - 1 Find tcrit We can do this by using R's qt function, which takes two arguments - - The first argument is the percentile you are looking for. So if you want the median value of distributed variable, you'd use .50. We want the .025th and the .975th (so that we get the 95% confidence interval). The second argument is the degrees of freedom, dfn. - Put them together: tcrit = qt(.975, dfn) Calculate the lower and upper bounds of the 95% confidence interval andprint them in your code chunk. Based on the 95% confidence interval, we can answer the question "is the population mean wage for college-educated workers equal to $1,200?" by testing the null hypothesis. Question: What is your answer to this question, in your own words, and why?
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Absolutely given a sample size of nCollege collegeeducated workers you can calculate the 95 confidence interval for the population mean wage and test ... View the full answer
Related Book For
Contemporary Business Mathematics with Canadian Applications
ISBN: 978-0134141084
11th edition
Authors: S. A. Hummelbrunner, Kelly Halliday, Ali R. Hassanlou, K. Suzanne Coombs
Posted Date:
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