You may need to use the appropriate technology to answer this question.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 34 59 43 30 3 32 42 85 30 48 110 50 10 26 70 52 83 78 27 70 27 90 38 52 76 Company B 44 65 42 34 67 104 46 29 37 84 76 44 32 49 64 43 36 32 64 64 (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 Company A flights and ?2 = population mean minutes late for delayed Company B flights.) H0: ?1 − ?2 ≠ 0 Ha: ?1 − ?2 = 0 H0: ?1 − ?2 Ha: ?1 − ?2 = 0 H0: ?1 − ?2 ≤ 0 Ha: ?1 − ?2 > 0 H0: ?1 − ?2 = 0 Ha: ?1 − ?2 ≠ 0 H0: ?1 − ?2 ≥ 0 Ha: ?1 − ?2 (b) What is the sample mean number of minutes late for delayed flights for each of these two airlines? Company A minCompany B min (c) Calculate the test statistic. (Round your answer to three decimal places.) What is thep-value? (Round your answer to four decimal places.) p-value = Using a 0.05 level of significance, what is your conclusion? RejectH 0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.Do not RejectH 0. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. RejectH 0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.Do not rejectH 0. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.

You may need to use the appropriate technology to answer this question. The success of an airline depends heavily on its ability to provide a pleasant customer experience. One dimension of customer...

You may need to use the appropriate technology to answer this question.

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

34	59	43	30	3
32	42	85	30	48
110	50	10	26	70
52	83	78	27	70
27	90	38	52	76

Company B

44	65	42	34	67
104	46	29	37	84
76	44	32	49	64
43	36	32	64	64

(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 Company A flights and ?₂ = population mean minutes late for delayed Company B flights.)

H₀: ?₁ − ?₂ ≠ 0

H_a: ?₁ − ?₂ = 0

H₀: ?₁ − ?₂ <>

H_a: ?₁ − ?₂ = 0

H₀: ?₁ − ?₂ ≤ 0

H_a: ?₁ − ?₂ > 0

H₀: ?₁ − ?₂ = 0

H_a: ?₁ − ?₂ ≠ 0

H₀: ?₁ − ?₂ ≥ 0

H_a: ?₁ − ?₂ <>

(b)

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

Company A minCompany B min

(c)

Calculate the test statistic. (Round your answer to three decimal places.)

What is thep-value? (Round your answer to four decimal places.)

p-value =

Using a 0.05 level of significance, what is your conclusion?

RejectH
₀. There is statistical evidence that one airline does better than the other in terms of their population mean delay time.Do not RejectH
₀. There is statistical evidence that one airline does better than the other in terms of their population mean delay time. RejectH
₀. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.Do not rejectH
₀. There is no statistical evidence that one airline does better than the other in terms of their population mean delay time.

Jun 10, 2022

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