Customers Arrive at a Single Self-Serve Coffee Machine in a Busy

question 23

Multiple Choice

Customers arrive at a single self-serve coffee machine in a busy mall at the rate of 20 per hour, following Poisson distribution. Each customer takes exactly 90 seconds to get his or her coffee. What is the expected number of customers in queue at this coffee machine?

• A) 1.0
• B) 1.5
• C) 0.5
• D) 2.0
• E) 3.0

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Definitions:

Direct Form

A presentation format used in financial reporting where information is listed directly without using indirect methods of calculation.

Exchange Rate

The rate at which one currency will be exchanged for another currency.

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The primary currency used by a business or unit in its financial statements, reflecting the economic environment in which it operates.