Question

The regression equation for predicting number of speeding tickets (Y) from information about driver age (X) is Y = -.065(X) + 5.57. How many tickets would you predict for a twenty-year-old? a. 4 b. 5.57 c. 4.27 d. 6 e. 1

Answer 1

c. 4.27

Explanation:

We have been given the regression equation of for predicting number of speeding tickets (Y) from information about driver age (X) as
`Y=-0.065(X)+5.57`.

To find the predicted number of tickets for a twenty-year-old, we will substitute
`X=20` in our given equation.

`Y=-0.065(20)+5.57`

`Y=-1.3+5.57`

`Y=4.27`

Therefore, the predicted number of tickets for a twenty-year-old would be 4.27 tickets.