Question

The regression equation for predicting the number of speeding tickets (y) from information about a driver's age (x) is y = -0.065(x) + 5.57. how many tickets would you predict for a twenty-year-old?

Answer 1

Put 20 in the equation where x is, then do the arithmetic.

... y = -0.065·20 +5.57 = 4.27

The equation predicts 4.27 tickets for a 20-year-old.