Statistics

A golf ball is dropped from 15 different heights (in inches) and the height of the bounce is recorded (in inches.) The regression analysis gives the model

y-hat = -0.4 + 0.70 (drop height)

where y-hat is the predicted bounce height of the golf ball.

A golf ball dropped from 71 inches bounced 53.3 inches. What is the residual for this bounce height.?

I am having trouble setting up the problem to get an answer...

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