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A study was made by a retail merchant to determine the relation between weekly advertising expenditures and sales. The following data were recorded: Advertising Costs ($) Sales ($) 40 20 25 20 30 50 40 20 50 40 25 50 385 400 395 365 475 440 490 420 560 525 480 510 a. Find the equation of the regression line to predict weekly sales from the advertising expenditures. Determine how much will be the sales when advertising costs are 28, 42 and 48 Find the correlation coefficient. (Explain your answer) C.

A study was made by a retail merchant to determine the relation between weekly advertising expenditures and sales. The following data were recorded: Advertising Costs ($) Sales ($) 40 20 25 20 30 50 40 20 50 40 25 50 385 400 395 365 475 440 490 420 560 525 480 510 a. Find the equation of the regression line to predict weekly sales from the advertising expenditures. Determine how much will be the sales when advertising costs are 28, 42 and 48 Find the correlation coefficient. (Explain your answer) C.

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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Print-screen your Excel -Solution and upload it) A study was made by a retail merchant to determine the relation between weekly advertising expenditures and sales. The following data were recorded: Advertising Costs ($) Sales ($) 40 20 25 385 400 395 365 475 440 490 420 560 525 20 30 50 40 20 50 40 25 50 480 510 a. Find the equation of the regression line to predict weekly sales from the advertising expenditures. Determine how much will be the sales when advertising costs are 28, 42 and 48 Find the correlation coefficient. (Explain your answer) C.
Transcribed Image Text:Print-screen your Excel -Solution and upload it) A study was made by a retail merchant to determine the relation between weekly advertising expenditures and sales. The following data were recorded: Advertising Costs ($) Sales ($) 40 20 25 385 400 395 365 475 440 490 420 560 525 20 30 50 40 20 50 40 25 50 480 510 a. Find the equation of the regression line to predict weekly sales from the advertising expenditures. Determine how much will be the sales when advertising costs are 28, 42 and 48 Find the correlation coefficient. (Explain your answer) C.
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