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The least squares regression equation 98 1 5 0t has

The least-squares regression equation ŷ = 98.1 + 5.0t has been fitted to the shipment data given here. Calculate the Durbin-Watson d statistic and test for positive autocorrelation of the residuals at the 0.05 level of significance. Comment on the appropriateness of using this model for this set of data.

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