Exponential DistributionsCustomer service time The mean
Chapter 8, Problem 35E(choose chapter or problem)
Problem 35E
Exponential Distributions
Customer service time The mean waiting time to get served after walking into a bakery is 30 seconds. Assume that an expo-nential density function describes the waiting times.
a. What is the probability a customer waits 15 seconds or less?
b. What is the probability a customer waits longer than one minute?
c. What is the probability a customer waits exactly 5 minutes?
d. If 200 customers come to the bakery in a day, how many are likely to be served within three minutes?
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