statistics: a student was asked to find the weights of two balls A and B using a scale with random measurement errors. when measured one at a time, ball A weighted 2 lbs and ball B weighted 3 lbs. when the balls were measured together the weight was 4 lbs. Use the method of least squares in linear regression to find the best estimate of the weights of balls A and B.

Question

anonymous · Answer

hints: try to minimize (A-2)^2+(B-3)^2+(A+B-4)^2. why?