$1.$ Interpret the coefficient on the dummy variable W in the context of the problem.

$2.$ Predict the selling price $($in $$1,000$s$)$ of a non$-$waterfront home with $1800$ square feet, $3$ bedrooms, and $2$ bathrooms.$$

$3.$ Predict the selling price $($in $$1,000$s$)$ of a waterfront home with $1800$ square feet, $3$ bedrooms, and $2$ bathrooms.$$

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