Joey is opening a coffee shop and he needs to decide how many baristas he should staff.He did some analysis of other coffee shops and he determined that this is anM/M/s system. He expects customers to arrive at the rate of 6 per minute and the service ratewill be 3 customers per minute per barista. He estimates the cost of waiting Cw to be e60 and the cost of service Cs will be e14 per hour per barista. (a) What is the minimum number of servers this system must have? (b) What number of servers will minimise the total cost

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Joey is opening a coffee shop and he needs to decide how many baristas he should staff.He did some analysis of other coffee shops and he determined that this is anM/M/s system. He expects customers to arrive at the rate of 6 per minute and the service ratewill be 3 customers per minute per barista. He estimates the cost of waiting Cw to be e60 and the cost of service Cs will be e14 per hour per barista.

(a) What is the minimum number of servers this system must have?

(b) What number of servers will minimise the total cost

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