22. In exercise 4, the following estimated regression equation relating sales to inventory in- vestment and advertising expenditures was given. ŷ = 25 + 10x, + 8x, The data used to develop the model came from a survey of 10 stores; for these data SST = 16,000 and SSR = 12,000. a. Compute SSE, MSE, and MSR. b. Use an F test and a .05 level of significance to determine whether there is a relation- ship among the variables.

22. In exercise 4, the following estimated regression equation relating sales to inventory in- vestment and advertising expenditures was given. ŷ = 25 + 10x, + 8x, The data used to develop the model came from a survey of 10 stores; for these data SST = 16,000 and SSR = 12,000. a. Compute SSE, MSE, and MSR. b. Use an F test and a .05 level of significance to determine whether there is a relation- ship among the variables.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.6: Regression And Median-fit Lines

Problem 4GP

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