he data is found in the file tuna.dta and the exercise is based on work you should have completed in labs 6 and 7. The questions in the labs gives a good guide to the type of material that should be included in your report. a) How do prices affect the sales of can of Easts tuna? Explore the characteristics of the data. Estimate the regression of Easts tuna cans on the prices of Easts tuna and other brands. Compare the linear with a log-linear model. b) Does the type of advertising affect sales? Include dummy variables to explore the effect of different types of advertising on the sale of tunas cans. c) Does advertising affect the response of quantity to price? Run the regression with log sales on prices, advertising and a cross product of advertising and East price for a can. Review the revised model and comment of which, in your opinion, is the best model, with some justification or explanation. WORD LIMIT: 800-1000 word (not including equations, tables, appendices etc)