The owner of showtime movie theaters, inc., would like to estimate weekly gross revenue as a function of advertising expenditures. historical data for a sample of eight weeks follow.

the owner of showtime movie theaters, inc., would

a. develop an estimated regression equation with the amount of television advertising as the independent variable (to 4 decimals).

? = + x1

b. develop an estimated regression equation with both television advertising and newspaper advertising as the independent variables (to 4 decimals).

? = + x1 + x2

c. is the estimated regression equation coefficient for television advertising expenditures the same in part (a) and in part (b)?