Call centers have high turnover rates because of the stressful environment. The national average is approximately 50%. The director of human resources for a large bank has compiled data from about 70 former employees at one of the bank’s call centers (see the Excel file Call Center Data). Use PivotTables to find these items: a. The average length of service for males and females in the sample. b. The average length of service for individuals with and without a college degree. c. The average length of service for males and females with and without prior call center experience. What conclusions might you reach from this information?