There are many factors that affect the selling price of a home. The total dwelling size and the assessed value are just two factors. Data were gathered on homes in a Milwaukee, Wisconsin, neighborhood. A scatterplot revealed a linear relationship between the total dwelling size of a home in 100 square feet and its selling price in dollars. The following is the regression output for the least squares regression of selling price on total dwelling size.

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How many homes were included in this study?
Obtain the least squares regression line for predicting selling price from the size of the home.
Is there evidence of a significant linear relationship at a = 0.05 between price and size?
The total dwelling size for another home in this neighborhood is 1620 square feet. Use the least squares line to estimate the selling price of this home.