The Global Business Travel Association reported the domestic airfare for business travel for the current year and the previous year. Below is a sample of 12 flights with their domestic airfares shownfor both years. Do not round intermediate calculations.Current Year Previous YearCurrent Year Previous Year255327258591522267249537702348459588666411204276519579534342666411387450a. Formulate the hypotheses and test for a significant increase in the mean domestic airfare for business travel for the one-year period.Ho: Hd- Select your answer -На На- Select your answer - ♥What is the p-value?t-value(to 3 decimals)Degrees of freedomp-value isSelect your answer -Using a 0.05 level of significance, what is your conclusion?We- Select your answer -v that there has been a significance increase in business travel airfares over the one-year period.b. What is the sample mean domestic airfare for business travel for each year?Current Year $(to 2 decimals)Previous Year $(to 2 decimals)c. What is the percentage change in the airfare for the one-year period?% (to 2 decimals) 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 fileLateFlights contains a sample of data from delayed flights showing the number of minutes each delayed flight was late for two different airlines, Delta and Southwest.Click on the datafile logo to reference the data.DATA fileTIT IT ITDeltaSouthwestDeltaSouthwestDeltaSouthwestDeltaSouthwestDelta116426.771461131482512668114791112674992311491287811112134139139111249118345117106656212626116171091417012a. 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.µ1 = population mean minutes late for delayed Delta flightsµ2 = population mean minutes late for delayed Southwest flightsНо : 1- U2- Select your answer -Ha : µ1 – 12- Select your answer -b. What is the sample mean number of minutes late for delayed flights for each of these two airlines?Sample mean for Delta =(rounded to 2 decimals)Sample mean for Southwest =(rounded to 2 decimals)c. Using a 0.05 level of significance, what is the p-value and what is your conclusion?df :(rounded down to nearest whole number)p-value(rounded to 4 decimals)

Question

Accepted Answer

Since you have asked multiple questions,we will solve the first question for you.If you want any…