# Question: A university placement director is interested in the effect that

A university placement director is interested in the effect that grade point average (GPA) and the number of university activities listed on the résumé might have on the starting salaries of this year’s graduating class. He has collected these data for a sample of 10 graduates:

a. Determine the multiple regression equation and interpret the partial regression coefficients.

b. Dave has a 3.6 grade point average and 3 university activities listed on his résumé. What would be his estimated starting salary?

c. Determine the 95% prediction interval for the starting salary of the student described in part (b).

d. Determine the 95% confidence interval for the mean starting salary for all students like the one described in part (b).

e. Determine the 95% confidence interval for the population partial regression coefficients, β1 and β2.

f. Interpret the significance tests in the computer printout.

g. Analyze the residuals. Does the analysis support the applicability of the multiple regression model to these data?

a. Determine the multiple regression equation and interpret the partial regression coefficients.

b. Dave has a 3.6 grade point average and 3 university activities listed on his résumé. What would be his estimated starting salary?

c. Determine the 95% prediction interval for the starting salary of the student described in part (b).

d. Determine the 95% confidence interval for the mean starting salary for all students like the one described in part (b).

e. Determine the 95% confidence interval for the population partial regression coefficients, β1 and β2.

f. Interpret the significance tests in the computer printout.

g. Analyze the residuals. Does the analysis support the applicability of the multiple regression model to these data?

## Answer to relevant Questions

An admissions counselor, examining the usefulness of x1 = total SAT score and x2 = high school class rank in predicting y = freshman grade point average (GPA) at her university, has collected the sample data shown here and ...In simple linear regression, the regression equation is a straight line. In multiple regression, what geometric form is taken by the regression equation when there are two independent variables? When there are three or more ...The models in this section include the first-, second-, and third-order polynomials. What would be the form of a fifth-order polynomial? Would such a polynomial model tend to be practical for use with business data? Repeat Exercise 17.17, using the data in file XR17017, but with y = total operating revenue (millions of dollars), x1 = number of aircraft, and x2 = number of employees. Repeat exercise The Air Transport Association has ...The dean of a law school has developed a regression equation for estimating the starting salary (thousands of dollars) of a new graduate on the basis of two independent variables: x1 = the score achieved on the Law School ...Post your question