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 file LateFlights contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Delta and Southwest. Delta Southwest 34 59 30 3 45 64 42 33 66 42 85 30 32 48 105 45 28 38 85 110 50 10 26 70 75 45 33 50 63 52 83 78 27 70 42 35 33 64 65 27 90 38 52 76 (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 H, = population mean minutes late for delayed Delta flights and u, = population mean minutes late for delayed Southwest flights. Enter != for # as needed.) Ho: H3: (b) What is the sample mean number of minutes late for delayed flights for each of these two airlines? Delta min Southwest 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.)

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 file LateFlights contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Delta and Southwest. Delta Southwest 34 59 30 3 45 64 42 33 66 42 85 30 32 48 105 45 28 38 85 110 50 10 26 70 75 45 33 50 63 52 83 78 27 70 42 35 33 64 65 27 90 38 52 76 (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 H, = population mean minutes late for delayed Delta flights and u, = population mean minutes late for delayed Southwest flights. Enter != for # as needed.) Ho: H3: (b) What is the sample mean number of minutes late for delayed flights for each of these two airlines? Delta min Southwest 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.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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