37. Sparagowski & Associates conducted a study of service times at the drive-up window of fast-food restaurants.
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37. Sparagowski & Associates conducted a study of service times at the drive-up window of fast-food restaurants. The average service time at McDonald’s restaurants was 2.78 minutes (The Cincinnati Enquirer, July 9, 2000). Service times such as these frequently follow an exponential distribution.
a. What is the probability that a customer’s service time is less than 2 minutes?
b. What is the probability that a customer’s service time is more than 5 minutes?
c. What is the probability that a customer’s service time is more than 2.78 minutes?
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Jehal Shah
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Related Book For 
Essentials Of Statistics For Business And Economics
ISBN: 9780324568608
5th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
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