Regression with a dummy

Solution

First regression: If height increases by one inch, expected weight increases by 4 pounds (same for both gender). However, at all heights, the expected weight is 13.8 pounds higher for males compared to females.

Second regression: If height increases by one percent, expected weight increases by 1.68% (same for both gender). However, at all heights, the expected weight is 9.76% higher for males compared to females.