Question: not sure what I am doing wrong, if you can help explain, thank you DATAfile: AirDeIay You may need to use the appropriate technology to

not sure what I am doing wrong, if you can help explain, thank you

not sure what I am doing wrong, if you can help explain,

DATAfile: AirDeIay You may need to use the appropriate technology to answer this question. Researchers at Purdue University and Wichita State University found that airlines are doing a better job of getting passengers to their destinations on timert AirTran Airways and Southwest Airlines were among the leaders in on-time arrivals with both having 88% of their ights 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 AirDeIay. Data are shown for both airlines. Assume population variances are unknown and unequal. AirTran Southwest Illl IN... (a) Formulate the hypotheses that can be used to test for a difference between the population mean minutes late for delayed flights by these two airlines. (Let #1 = population mean minutes late for delayed Airtran flights and [12 = population mean minutes late for delayed Southwest flights.) (b) What is the sample mean number of minutes late for delayed flights for each of these two airlines? AirTran X min Southwest Smin (c) Calculate the test statistic. (Round your answer to three decimal places.) i: What is the p-value? (Round your answer to four decimal places.) p-value = C] Using a 0.05 level of significance, what is your conclusion? Q Do not reject HO' There is no statistical evidence that one airline does better than the other in terms of their population mean delay time. Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. Do not Reject H0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. 000 Reject H0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time. X

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