Business Analytics Data Analysis and Decision Making, Albright and Winston, 5e. Problem 7C. The answer says it has not been solved yet? Do I have to upgrade to see the answer, how does the solution...

Business Analytics Data Analysis and Decision Making, Albright and Winston, 5e. Problem 7C. The answer says it has not been solved yet? Do I have to upgrade to see the answer, how does the solution become available? I can type out Th entire question but it requires a data from an excel file, do you not have access to the question?