19. Departures. What are the chances your flight willleave
Chapter 23, Problem 19(choose chapter or problem)
19. Departures. What are the chances your flight willleave on time? The U.S. Bureau of Transportation Statisticsof the Department of Transportation publishes informationabout airline performance. Here are a histogramand summary statistics for the percentage of flights departingon time each month from 1995 thru 2006. There is no evidence of a trend over time. (The correlationof On Time Departure% with time is )a) Check the assumptions and conditions for inference.b) Find a 90% confidence interval for the true percentageof flights that depart on time.c) Interpret this interval for a traveler planning to fly.
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