A Service Counter Employs Two Servers

question 19

Multiple Choice

A service counter employs two servers. On average a server requires 8 minutes to process a customer and service times follow an exponential distribution. Customers arrive at the counter at the rate of 12 per hour according to a Poisson distribution. The service rate per server for this system is

• A) 3.75 customers per hour.
• B) 7.75 customers per hour.
• C) 8 customers per hour.
• D) 16 customers per hour.

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Definitions:

Speech Sounds

The distinct units of sound, such as phonemes, that are used in a language to convey meaning.

Phonemes

Minimal sound units in a language that serve to distinguish words from each other.

Morphemes

The smallest units of meaning in a language, which can be a word or a part of a word (such as a prefix).

Metalinguistic Awareness

The ability to reflect on and manipulate the structural features of spoken language, such as understanding that a sentence can be interpreted in different ways.