In Problem 13.5 on page 470, you used the percentage of alcohol and chlorides to predict wine
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In Problem 13.5 on page 470, you used the percentage of alcohol and chlorides to predict wine quality (stored in VinhoVerde). Using the results from that problem,
a. Construct a 95% confidence interval estimate of the population slope between wine quality and the percentage of alcohol.
b. At the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the independent variables to include in this model.
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Related Book For
Business Statistics A First Course
ISBN: 9780321979018
7th Edition
Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan
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