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US Airways conducted a number of studies that indicateda substantial savings could be obtained by encouraging DividendMiles frequent flyer customers to redeem miles and schedule awardflights online.One study collected data on the amount of timerequired ro redeem miles and schedule an award flight over thetelephone.A sample showing the time in minutes required for each of150 award flights scheduled by telephone is contained in the dataset flights.Use excel to help answer the following questions. mean=14 sd=3.8
a. What is the sample mean number of minutes required toschedule an award flight by telephone? Mean is= 14
b. What is the 95% confidence interval for the population meantime to schedule an award flight by telephone?
c. Assume a telephone ticket agent works 7.5 hours per day,Howmany award flights can one ticket agent be expected to handle aday?
d.Dicuss why this information supported US Airways plans touse an online system to reduce costs.
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