The relationship between sules (Y), Radio advertising costs (X1) aud print advertising costs (X2), for the last fourteen (14) years for Eye-optics is as follows: Y =0.64 + 1.66X+0.02X2 (0.02) (0.08) (0.009).   R^2= 0.975

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 3SE: How are the absolute maximum and minimum similar to and different from the local extrema?
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Question Flyo: The relationship between sules (Y), Radio advertising costs (X1) aud print advertising costs (X2), for the last fourteen (14) years for Eye-optics is as follows:

Y =0.64 + 1.66X+0.02X2

(0.02) (0.08) (0.009). 

 R^2= 0.975

(a) Test the hypothesis that the partial slopes are equal to zero at the 5% level of signiticance. 

(b) Interpret the results based on economle theory.

C, Test the significance of R^2 and explain how this result relates to tho result in part (a) 

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