We have data on 4,071 students for whom we have recorded their race (white, black, other) and their height in centimeters.We would like to investigate the association of these variables with the weight in kilograms.The following results were obtained for a linear regression model.

1.What is the average weight of a white female who is 160cm tall?

2.Which group is heavier on average (assuming the same height): black males or white females?

3.What is the interpretation of the coefficients on white (white race) and other (other race) in the model?

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