4. [15 points] The operations manager of a musical instrument distributor feels that demand for a...

 

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4. [15 points] The operations manager of a musical instrument distributor feels that demand for a particular type of guitar may be related to the number of YouTube views for a music video by the popular rock group Marble Pumpkins during the preceding month. The manager has collected the data shown in the following table: YouTube VIEWS (1,000s) GUITAR SALES (1000s) 50 8 60 75 90 95 55 11 13 14 15 13 a. Using the equations presented in this chapter or Excel tools, compute the SST, SSE, and SSR. Find the least-squares regression line for these data. b. Using the regression equation, predict guitar sales if there were 40,000 views last month. 4. [15 points] The operations manager of a musical instrument distributor feels that demand for a particular type of guitar may be related to the number of YouTube views for a music video by the popular rock group Marble Pumpkins during the preceding month. The manager has collected the data shown in the following table: YouTube VIEWS (1,000s) GUITAR SALES (1000s) 50 8 60 75 90 95 55 11 13 14 15 13 a. Using the equations presented in this chapter or Excel tools, compute the SST, SSE, and SSR. Find the least-squares regression line for these data. b. Using the regression equation, predict guitar sales if there were 40,000 views last month.