2. McDonalds Corporation has reported the following values for total revenues and net income during the 1998 to 2005 period. All data are in billions of dollars: Source: McDonalds Corporation, 2005 Annual (a) Determine the least-squares regression equation line for estimating net income and interpret its slope. (b) For a year in which total revenues are $18.0 billion, estimate the net income for that year. (c) Also nd a 95% Condence and Prediction Interval for the above estimate. (d) Find the sample correlation coefficient for the model.
2. McDonalds Corporation has reported the following values for total revenues and net income during the 1998 to 2005 period. All data are in billions of dollars: Source: McDonalds Corporation, 2005 Annual (a) Determine the least-squares regression equation line for estimating net income and interpret its slope. (b) For a year in which total revenues are $18.0 billion, estimate the net income for that year. (c) Also nd a 95% Condence and Prediction Interval for the above estimate. (d) Find the sample correlation coefficient for the model.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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2. McDonalds Corporation has reported the following values for total revenues and net income during the
1998 to 2005 period. All data are in billions of dollars: Source: McDonalds Corporation, 2005 Annual
(a) Determine the least-squares regression equation line for estimating net income and interpret its slope.
(b) For a year in which total revenues are $18.0 billion, estimate the net income for that year.
(c) Also nd a 95% Condence and Prediction Interval for the above estimate.
(d) Find the sample
Transcribed Image Text:1998
1999
2000
2001
2002
2003
2004
2005
Net Income
1.55
1.95
1.98
1.64
0.89
1.47
2.28
2.60
Total Revenues
12.42
13.26
14.24
14.87
15.41
17.14
19.07
20.46
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