In Problem 13.82 you used the age of German employees to develop a model to predict their yearly base salary. Using the competence level, where a point ranges from 10 to 100 based on the evaluation of the employee of the previous year and higher values indicate higher level of competence, as the independent variable for this problem,

a. Repeat Problem 13.82 (a), (b), (d), and (f).

b. compare the model of Problem 13.82 to this model.

Problem 13.82 (a), (b), (d), and (f).

A human resource analyst would like to study the primary factors influencing the base salaries of employees in Germany. He begins by using the age (in years) of the employees to predict the base yearly salary (in €). The file GermanEmployees contains this data for 250 employees who have been at their current workplace for more than a year.

a. Assuming a linear relationship, use the least-squares method to compute the regression coefficients b₀ and b₁.

b. Interpret the meaning of the Y intercept, b₀, and the slope, b₁, in this problem.

d. Compute the coefficient of determination, r², and interpret its meaning.

f. At the 0.05 level of significance, is there evidence of a linear relationship between age and base salary?