Answered: The manager of a grocery store in the…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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The manager of a grocery store in the retirement community of Sunnyville is interested in providing good service
to the senior citizens who shop in her store. Currently, the store has a separate checkout counter for senior citi-
zens. On average, 30 senior citizens per hour arrive at the counter, according to a Poisson distribution, and are
served at an average rate of 35 customers per hour, with exponential service times. Find the following operating
characteristics:
a. Probability of zero customers in the system
b. Average utilization of the checkout clerk
c. Average number of customers in the system
d. Average number of customers in line
e. Average time spent in the system
f. Average waiting time in line

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