E Homework: Lab 6 Question 7, 16.4.25 HW Score: 61.93%, 4.95 of 8 points Save Part 1 of 4 O Points: 0 of 1 The data below show the volume of transactions (in hundreds of thousands) in shares of a corporation over a period of 12 weeks. Using these data, estimate a first-order autoregressive model, and use the fitted model to obtain forecasts of volume for the next 3 weeks. Week 1 2 3 4 5 6 7 8 9 10 1 12 Trading 30.8 12.7 14.1 10.3 24.3 16.3 11.1 18.9 15.9 19.2 27.3 19.8 Volume . . . . . The estimated first-order autoregressive model is x, =|+ (D)x - 1. 'Round to two decimal places as needed.)