A professor of industrial relations believes that anindividual's wage rate at a factory(Y) depends on his performance rating (X1) and the number of economics courses the employee successfully completed in college (X2). The professor randomly selects 6 workers and collects the information in the table shown on the right.

An employee who took 12 economics courses scores 10 on the performance rating. What is her estimated expected wagerate?

Employee Y X_1 X_2

110 3 0

2 12 1 5

3 15 8 1

4 17 5 8

5 20 7 12

6 2510 9

An employee who took 12 economics courses scores 10 on the performance rating. What is her estimated expected wagerate?

25.70

10.90

12.20

24.87