A shoe store developed the following estimated regression equation relating sales to inventory Investment and advertising expenditures 9 = 23 + 10x1 + 6*2 where *1 = inventory investment ($1,000s) X2 = advertising expenditures ($1,000s) y = sales ($1,000s) (a) Predict the sales (in dollars) resulting from a $14,000 Investment in Inventory and an advertising budget of $10,000. (b) Interpret b, and b, in this estimated regression equation. Sales can be expected to Increase by $ for every dollar increase in Inventory Investment when advertising expenditure is held constant. Sales can be expected to increase by $ for every dollar Increase in advertising expenditure when inventory investment is held constant. Tutorial Submil