3.11 The data in Table E35 give the percentage share of market of a particular brand of canned peaches (31,) for the past 15 months and the relative selling price (1}). TABLE E35 Market Share and Price of Canned Peaches I I: J31- I I: .11.! 1 100 15.93 9 35 16.61} 2 93 16.26 10 33 17.16 3 100 15.94 11 31 17.17 4 39' 16.31 12 79 18.05 5 95 15.67 13 91] 16.18 6 3'? 16.4? 14 T? 18. 1'1" '1' 93 15.66 15 '13 17.25 3 32 16.94 a. Pit a simple linear regression model to these data. Plot the resid- uals versus time. Is there any indication of autocorrelation? I). Use the DurbinWatson test to determine if there is positive autocorrelation in the errors. What are your conclusions? e. Use one iteration of the CochraneOrcutt procedure to estimate the regression coefcients. Find the standard errors of these regression coefcients. (1. Is there positive autocorrelation remaining after the rst itera- tion? Would you conclude that the iterative parameter estimation technique has been successful