Basic Business Statistics, Student Value Edition
Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Chapter 15, Problem 11PS

Using the data of Problem 15.4 on page 600, stored in DomesticBeer, Perform a natural logarithmic transformation of the dependent variables (calories). Using the transformed dependent variable and the percentage of alcohol and the number of carbohydrates as the independent variables, perform a multiple regression analysis.

a. State the regression equation.

b. Perform a residual analysis of the results and determine whether regression assumptions are valid.

c. At the 0.05 level of significance, is there a significant relationship between the natural logarithm of calories and the percentage of alcohol and the number of carbohydrates?

d. Interpret the meaning of the coefficient of determination r 2 , in this problem.

e. Compute the adjusted r 2 .

f. Compare your results with those in Problem 15.4 and 15.10. Which is best? Why?

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STER. 1. Wine Consumption. The table below gives the U.S. adult wine consumption, in gallons per person per year, for selected years from 1980 to 2005. a) Create a scatterplot for the data. Graph the scatterplot Year Wine below. Consumption 2.6 b) Determine what type of model is appropriate for the 1980 data. 1985 2.3 c) Use the appropriate regression on your calculator to find a Graph the regression equation in the same coordinate plane below. d) According to your model, in what year was wine consumption at a minimum? A e) Use your model to predict the wine consumption in 2008. 1990 2.0 1995 2.1 2000 2.5 2005 2.8
a. Develop an estimated regression equation with the amount of television advertising as the independent variable (to 1 decimal).

Chapter 15 Solutions

Basic Business Statistics, Student Value Edition

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