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Quick Clean Rooter Cleans Out Clogged Drains

question 56

Essay

Quick Clean Rooter cleans out clogged drains. Due to the competitive nature of the drain cleaning business, if a customer calls Quick Clean and finds the line busy, they immediately try another company and Quick Clean loses the business.
Quick Clean management estimates that on the average, a customer tries to call Quick Clean every three minutes and the average time to take a service order is 200 seconds. The company wishes to hire enough operators so that at most 4% of its potential customers get the busy signal.
a.How many operators should be hired to meet this objective?
b.Given your answer to a), what is the probability that all the operators are idle?


Definitions:

User

An individual or system using a computer or software application.

Data Entry

The process of inputting data or information into a computer system or electronic database.

Specified Guidelines

Guidelines or rules that have been outlined or defined with specific details or for a particular purpose.

Table

A structured arrangement of data made up of rows and columns, which can be used in documents, databases, or HTML code for displaying information.

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