The Success Of An Airline Depends Heavily On Its Ability To Provide A Pleasant Customer Experience One Dimension Of Cus 1 (33.81 KiB) Viewed 20 times
The success of an airline depends heavily on its ability to provide a pleasant customer experience. One dimension of customer service on which airlines compete is on-time arrival. The tables below contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Company A and Company B. Company A Company B 34 594330 3 46 65 41 34 67 32 42 85 30 48 104 44 29 39 86 110 50 10 26 70 76 45 33 50 63 52 8378 2770 42 36 33 64 64 27 90 38 5276 (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 u, = population mean minutes late for delayed Company A flights and uz = population mean minutes late for delayed Company B flights.) Howy - 4,20 Н.:и. – 42 < 0 Hou - W2 = 0 H: 47 - W2 0 Ho: 4 - H2 < 0 H: "7 - W2 = 0 Ho: 47 - 4,50 H: 41-42 > 0 oHo." -4,70 H:47 - 42 = 0
(b) What is the sample mean number of minutes late for delayed flights for each of these two airlines? Company A min Company B min (c) Calculate the test statistic. (Round your answer to three decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value = Using a 0.05 level of significance, what is your conclusion? 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 H. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. Do not Reject H . There is statistical evidence that one airline does better than the other in terms of their population mean delay time. O Reject H. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.
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