The data below show the volume of transactions (in hundreds of thousands) in shares of a...

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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 11 12 Trading Volume 25.8 9.4 13.3 12.7 21.9 16.7 9.9 23.5 13.7 19.8 28.4 23.1 The estimated first-order autoregressive model is x+ (Round to two decimal places as needed.) = + (1) 4-1- 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 11 12 Trading Volume 25.8 9.4 13.3 12.7 21.9 16.7 9.9 23.5 13.7 19.8 28.4 23.1 The estimated first-order autoregressive model is x+ (Round to two decimal places as needed.) = + (1) 4-1-