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Data on advertising expenditures and revenue (in thousands of dollars) for the Four Sea-sons Restaurant follow.a. Let $x$ equal advertising expenditures and $y$ equal revenue. Use the method of leastsquares to develop a straight line approximation of the relationship between the twovariables.b. Test whether revenue and advertising expenditures are related at a .05 level ofsignificance.Summaryc. Prepare a residual plot of $y-\hat{y}$ versus $\hat{y}$ . Use the result from part (a) to obtain thevalues of $\hat{y} .$d. What conclusions can you draw from residual analysis? Should this model be used, orshould we look for a better one?

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Intro Stats / AP Statistics

Chapter 12

Simple Linear Regression

Linear Regression and Correlation

University of North Carolina at Chapel Hill

Cairn University

Boston College

Lectures

0:00

05:22

Data on advertising expend…

04:59

In exercise $4,$ the follo…

04:52

A study was made by a reta…

04:46

05:09

Advertising and Sales The …

02:48

The table shows the advert…

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