Add an interaction term (GNP) (Dummy) to Eq. 16.26. The MINITAB outputs are presented as follows. Please compare these results with those presented in Table 16.10.

Eq. 16.26

Table 16.10

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MTB > MTB > SUBC> Regression Analysis BRIEF 3 REGRESS M3 4 GNP PRIMERT DUMMY' GNPDUMMY'; DW. Predictor Constant The regression equation is M3 - 693 +0.383 GNP 6.47 PRIMERt + 565 DUMMY - 0.218 GNPDUMMY GNP PRIMERT DUMMY GNPDUMMY Coef -693.0 0.38348 -6.468 565.3 -0.21835 S = 26.84 Analysis of Variance 1 R-Sq 98.7% - St Dev 122.1 0.02719 2.924 128.7 0.03634 T -5.67 14.11 -2.21 4.39 -6.01 P 0.000 0.000 0.036 0.000 0.000 R-Sq (adj) = 98.5%