Question: An investigator interested in regional differences in breastfeeding attitudes and practices conducts a national survey. The survey includes a multi-item instrument measuring breastfeeding attitudes. The resulting breastfeeding attitudes scale takes values ranging from 1 to 5, with higher numbers representing more favorable attitudes toward breastfeeding. This scale score is named BRATT in the dataset. The dataset also includes a variable named region which takes the following values: 1 = Northeast, 2 = Southeast, 3 = Midwest, 4 = Southwest, 5 = Rocky Mountains, and 6 = West Coast. The investigator creates a set of dummy variables and runs a linear regression model with the breastfeeding attitudes scale as the dependent variable. The estimated model is

BRATT _i = 3.68 + 0.57 NORTHEAST _i – 0.13 SOUTHEAST _i – 0.41 SOUTWEST _i – 0.04 ROCKIES _i + 0.77 WESTCOAST _i + e _i

According to this model, what is the mean score on the breastfeeding attitudes scale for respondents residing in the Midwest?

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