You have been tasked by the Director of Operations at Flyer Airlines to analyze the choice of aircraft for their new city-paring: Chicago, IL (ORD) – Buffalo, NY (BUF). Flyer Airlines has the option of flying this route with either their mainline Boeing 737-800 (175 seats) or outsource through one of their regional partners in a CRJ-900 (90 seats). Design a statistical analysis that will compare the daily per seat trip cost means of a previous month's data from these two aircraft types on that route. Use .05 as the alpha level for Type I error rate. Daily per seat trip costs include the following variables: fuel price, fuel burn, insurance, aircraft, maintenance, crew, and other operational costs. Note – there have not been enough ticket sales data yet (new route) to get a firm estimate for future load factor. Notice also, that some daily per seat trip costs (*) reflect recently signed regional union contracts that include pay increases for pilots and mechanics at the regional airline.

B737: 51, 57, 44, 46, 63, 46, 48, 33, 31, 36, 35, 28, 27, 39, 38, 31, 44, 45, 63, 31, 65, 50, 51, 47, 43, 44, 66, 49, 49, 48, 51

CRJ: 40, 41, 36, 35, 43, 34, 35, 32, 35, 42, 41, 38, 44*, 46*, 53*, 46*, 54*, 49*, 48*

• What are the assumptions of the statistical analysis test you chose?
• Phrase your results in a scientific sentence using appropriate statistical symbology and terminology.
• What do your results lend for the solution to the Dir of Ops' tasking based on the data you were given? What would be your recommendations for which aircraft to use and why? What are some other factors to consider before making a decision on aircraft?