5. A company CEO wants to test her belief that the average sales per salesperson in the Pittsburgh office (PITT) is the same as the average sales per salesperson in the Philadelphia office (PHILLY). Below are weekly sales for randomly selected salespersons:

Pitt 37 27 40 25 29 39 29 32 36 26 33 27

Phil 27 17 24 14 21 21 16 21 19 12

Test the COE's hypothesis at the 0.05 level. Don't forget to test to see whether the variances are equal or unequal. Use Excel to solve this and submit your written answers along with the Excel file.