10. Do you get the estimated value of 6? Why or why not? Explain your answer. 10. a. To be able to review the impact of the variable EXPER, using GRETL, construct the model:

= 0 + 1 + 2 + 3 + 4 + 5 +

In which EXPERSQ is the square of the variable EXPER. How did you overcome the problem in Part 09 above in here? Explain.

b. Based on your estimated outcome in here, discuss about the shape of the graph relating EXPER and RST (i.e. U-curve, inverted U, etc.). Explain