Standard errors of the slopes of the dummy variables

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1. What's the estimated value from the ANOVA regression given by the slopes in Table 4 for the change in sales in the Midwest if ads feature the small labor partition? What's the simple way to get this estimate?

2. The standard errors of the slopes of the dummy variables in Table 4 are all the same (80.57) and less than the common standard error of the interactions (113.94). Why is that?

Reference no: EM131009352

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