In Problem 12.4 on page 423, you used the percentage of alcohol to predict wine quality. The
Question:
In Problem 12.4 on page 423, you used the percentage of alcohol to predict wine quality. The data are stored in VinhoVerde. From the results of that problem, b1 = 0.5624 and Sb1 = 0.1127.
a. At the 0.05 level of significance, is there evidence of a linear relationship between the percentage of alcohol and wine quality?
b. Construct a 95% confidence interval estimate of the population slope, β1.
In Problem 12.4
The production of wine is a multibillion dollar worldwide industry. In an attempt to develop a model of wine quality as judged by wine experts, data was collected from red wine variants of Portuguese “ Vinho Verde” wine. A sample of 50 wines is stored in VinhoVerde. Develop a simple linear regression model to predict wine quality, measured on a scale from 0 (very bad) to 10 (excellent), based on alcohol content (%).
Step by Step Answer:
Business Statistics A First Course
ISBN: 9780321979018
7th Edition
Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan