Comparing Length of Flight Delays.

The success of an airline depends heavily on itsability to provide a pleasant customer experience. One dimension of customer serviceon which airlines compete is on-time arrival. The fileLate Flightscontains a sample ofdata from delayed flights showing the number of minutes each delayed flight was latefor two different airlines, Delta and Southwest.

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.

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

c.Using a .05 level of significance, what is thep-value and what is your conclusion?

Delta Southwest 34 45 59 64 43 42 30 33 3 66 32 105 42 45 85 28 30 38 48 85 110 75 50 45 10 33 26 50 70 63 52 42 83 35 78 33 27 64 70 65 27 90 38 52 76