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Are Flights Cheaper When Scheduled Earlier? Listed below
Chapter 9, Problem 4 RE(choose chapter or problem)
Problem 4 RE
Are Flights Cheaper When Scheduled Earlier? Listed below are the costs (in dollars) of flights from New York (JFK) to San Francisco for US Air, Continental, Delta, United, American, Alaska Airlines, and Northwest. Use a 0.01 significance level to test the claim that flights scheduled one day in advance cost more than flights scheduled 30 days in advance. What strategy appears to be effective in saving money when flying?
Flight scheduled one day in advance |
456 |
614 |
628 |
1088 |
943 |
567 |
536 |
Flight scheduled 30 days in advance |
244 |
260 |
264 |
264 |
278 |
318 |
280 |
Questions & Answers
QUESTION:
Problem 4 RE
Are Flights Cheaper When Scheduled Earlier? Listed below are the costs (in dollars) of flights from New York (JFK) to San Francisco for US Air, Continental, Delta, United, American, Alaska Airlines, and Northwest. Use a 0.01 significance level to test the claim that flights scheduled one day in advance cost more than flights scheduled 30 days in advance. What strategy appears to be effective in saving money when flying?
Flight scheduled one day in advance |
456 |
614 |
628 |
1088 |
943 |
567 |
536 |
Flight scheduled 30 days in advance |
244 |
260 |
264 |
264 |
278 |
318 |
280 |
ANSWER:
Answer:
Step1 of 4:
The given data listed below are the costs (in dollars) of flights from New York (JFK) to San Francisco for US Air, Continental, Delta, United, American, Alaska Airlines, and Northwest.
Flight scheduled one day in advance ( |
Flight scheduled 30 days in advance ( |
Difference d = - |
456 |
244 |
212 |
614 |
260 |
354 |
628 |
264 |
364 |
1088 |