The height of your workstation desk is one of the essential criteria for creating the perfect ergonomic workspace, whether at home or in your office. A company's plant manager is currently considering two designs of ergonomic computer desks for their employees. An experiment is performed to help with the purchasing decision. 45 randomly selected employees used thedesign Acomputer desk, and another 45 employees used thedesign Bcomputer desk. On a 15-point scale, their comfort level was recorded in the EXCEL file ErgonomicDeskDesign.xlsx. Use EXCEL and an appropriate hypothesis test to help the plant manager to answer the following research question.

Figure 1: Design A Histogram Figure 2: Design B Histogram 10 12 CO Frequency Frequency O 8 9 10 6 8 Comfort Level Ratings 9 10 Figure 3: Histogram of Differences (A-B) Comfort Level Ratings Figure 4: Boxplots of Comfort Level ratings Frequency Comfort Level Ratings CO LO O O -3 -2 -1 0 2 Design A Comfort Level Ratings Design B