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a. Develop the least square regression equation for these variables. Plot the regression line on the scatter plot. b. Develop a 95% confidence interval estimate for the increase in sales resulting from increasing the advertising budget by S1. Interpret the interval. C. Discuss whether it is appropriate to interpret the intercept value of this model. Under what conditions is it appropriate? Discuss.

a. Develop the least square regression equation for these variables. Plot the regression line on the scatter plot. b. Develop a 95% confidence interval estimate for the increase in sales resulting from increasing the advertising budget by S1. Interpret the interval. C. Discuss whether it is appropriate to interpret the intercept value of this model. Under what conditions is it appropriate? Discuss.

MATLAB: An Introduction with Applications
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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Develop the least square regression equation for these variables. Plot the regression line on the scatter plot. a. b. Develop a 95% confidence interval estimate for the increase in sales resulting from increasing the advertising budget by $1. Interpret the interval. Discuss whether it is appropriate to interpret the intercept value of this model. Under what conditions is it appropriate? Discuss. C.
Transcribed Image Text:Develop the least square regression equation for these variables. Plot the regression line on the scatter plot. a. b. Develop a 95% confidence interval estimate for the increase in sales resulting from increasing the advertising budget by $1. Interpret the interval. Discuss whether it is appropriate to interpret the intercept value of this model. Under what conditions is it appropriate? Discuss. C.
Weekly Sales Advertising $4,000 $180 $2,050 $243 $3,760 $204 S1,897 $199 $2,567 $356 $4,330 $605 $5,670 $200 $2,356 $304 $3,456 $105 $1,254 $379 $4,300 $300 $3,250 $402 $4,680 $399 $4,200 $209 $2,400 $245 S1,890 $190 S3,600 $480 $5,700 $515 $5,690 $300 $2,300 $145 $1,700 $170
Transcribed Image Text:Weekly Sales Advertising $4,000 $180 $2,050 $243 $3,760 $204 S1,897 $199 $2,567 $356 $4,330 $605 $5,670 $200 $2,356 $304 $3,456 $105 $1,254 $379 $4,300 $300 $3,250 $402 $4,680 $399 $4,200 $209 $2,400 $245 S1,890 $190 S3,600 $480 $5,700 $515 $5,690 $300 $2,300 $145 $1,700 $170
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