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d) Determine if Advertising is significantly related to Sales. Use a = 0.10.

d) Determine if Advertising is significantly related to Sales. Use a = 0.10.

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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c) Determine if *Price* is significantly related to *Sales*. d) Determine if *Advertising* is significantly related to *Sales*. Use α = 0.10.
Transcribed Image Text:c) Determine if *Price* is significantly related to *Sales*. d) Determine if *Advertising* is significantly related to *Sales*. Use α = 0.10.
#1 A company has recorded data on the weekly sales for its product \( y \), the unit price of the competitor's product \( x_1 \), and advertising expenditures \( x_2 \). The data resulting from a random sample of 7 weeks follows. | Week | Price (\( x_1 \)) | Advertising (\( x_2 \)) | Sales (\( y \)) | |------|-------------------|-------------------------|-----------------| | 1 | 0.33 | 5 | 20 | | 2 | 0.25 | 2 | 14 | | 3 | 0.44 | 7 | 22 | | 4 | 0.40 | 9 | 21 | | 5 | 0.35 | 4 | 16 | | 6 | 0.39 | 8 | 19 | | 7 | 0.29 | 9 | 15 |
Transcribed Image Text:#1 A company has recorded data on the weekly sales for its product \( y \), the unit price of the competitor's product \( x_1 \), and advertising expenditures \( x_2 \). The data resulting from a random sample of 7 weeks follows. | Week | Price (\( x_1 \)) | Advertising (\( x_2 \)) | Sales (\( y \)) | |------|-------------------|-------------------------|-----------------| | 1 | 0.33 | 5 | 20 | | 2 | 0.25 | 2 | 14 | | 3 | 0.44 | 7 | 22 | | 4 | 0.40 | 9 | 21 | | 5 | 0.35 | 4 | 16 | | 6 | 0.39 | 8 | 19 | | 7 | 0.29 | 9 | 15 |
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