The Average Number of Calls Received by a Switchboard in a 30-Minute

question 89

Short Answer

The average number of calls received by a switchboard in a 30-minute period is 15.
a.What is the probability that between 10:00 and 10:30 the switchboard will receive exactly 10 calls?
b.What is the probability that between 10:00 and 10:30 the switchboard will receive more than 9 calls but fewer than 15 calls?
c.What is the probability that between 10:00 and 10:30 the switchboard will receive fewer than 7 calls?

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Definitions:

Sterile Technique

A set of practices used by healthcare professionals to maintain asepsis and minimize the risk of introducing pathogens during medical procedures.

Sterile Field

An area, usually in a surgical or procedural environment, that is free of all microorganisms to prevent infection during medical procedures.

Carrier

An individual or entity that transports or conveys goods or people from one place to another.

Pathogen

An organism, such as a virus, bacterium, or fungus, that causes disease in its host.