2. 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 booked 30 days in advance and 1 day in advance. XD = 418 1 Day 456 614 628 .1088 943 567 536 SD = 234.9078 30 Days 244 2360 264 264 276 318 280 a) What are the di 364 no = 7 differences, IDay - 30 Days ?667 749 256 elet Mean = 418 b) Why is it appropriate and helpful to use the matched pairs test with these data? It is appropriate and helpful to use the matched re pairs test with these dit , because, it - V not helps us Find the difference in prices exactly ITyou Saki day in advanceto soday's in advance. c) Construct a 95% Confidence Interval for the mean of the differences in the prices (1 day - 30 day). (t* = 2.4460) - 2 $ + 2. 49 80 Vos ( 1 - 0/S ) 0. 96