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tions Exercise 15.04 Algo (Least Square Method) O A shoe store developed the following estimated regression equation relating sales to inventory investment and advertising expenditures. y = 20 + 91 + 6:2 where $1 = inventory investment ($1000s) T2 = advertising expenditures ($1000s) y = sales ($1000s) a. Predict the sales resulting from a $15,000 investment in inventory and an advertising budget of $10,000. b. Interpret by and b2 in this estimated regression equation. b1 : Sales can be expected to - Select your answer - | by $9 for every dollar increase in - Select your answer - when - Select your answer - is held constant. by : Sales can be expected to - Select your answer - by $6 for every dollar increase in - Select your answer - when - Select your answer - Mis held constant. O- Icon Key