Researchers at Purdue university and Wichita state university

researchers at Purdue university and Wichita state university found that airlines are doing a better job of getting passengers to their destinations on time (Associated press, April 2, 2012). Air Tran Airways and Southwest Airlines were among the leaders in on-time arrivals with both having 88% of their flights arriving on time. But for the 12% of flights that were delayed, how many minutes were these flights late? Sample data showing the number of minutes that delayed flights were late are provided in the file named Air Delay. Data are shown for both airlines

A. Formulate the hypotheses that can be used to test for a difference between the population mean minutes later for delayed flights by these two airlines.

B. What is the sample mean number of minutes late for delayed flights for each of these two airlines?

C. Using a .05 level of significance, what is the p-value and what is your conclusion

Among other benefits, we guarantee:

  • Essays written from scratch – 100% original,

  • Timely delivery,

  • Competitive prices and excellent quality,

  • 24/7 customer support,

  • Priority on customer’s privacy,

  • Unlimited free revisions upon request, and

  • Plagiarism free work.

Providing quality essays, written from scratch, delivered on time, at affordable rates!

Unlike most other websites we deliver what we promise;

  • Our Support Staff are online 24/7
  • Our Writers are available 24/7
  • Most Urgent order is delivered with 6 Hrs
  • 100% Original Assignment Plagiarism report can be sent to you upon request.

GET 15 % DISCOUNT TODAY use the discount code PAPER15 at the order form.

Type of paper
Academic level
Subject area
Number of pages
Paper urgency
Cost per page