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A Catalog Company That Receives the Majority of Its Orders

question 33

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A catalog company that receives the majority of its orders by telephone conducted a study to determine how long customers were willing to wait on hold before ordering a product. The length of waiting time was found to be a random variable best approximated by an exponential distribution with a mean length of waiting time equal to 3 minutes (i.e. the mean number of calls answered in a minute is 1/3) . Find the waiting time at which only 10% of the customers will continue to hold.


Definitions:

Contact Configurations

The arrangement and specification of contacts within electrical devices, defining their operational functionalities.

Contactor

An electrically controlled switch used for switching an electrical power circuit, commonly used in motor and lighting applications.

Energized

A term used to describe when an electrical component or circuit has voltage applied and is functioning or ready to function.

Holding Contacts

Electrical contacts designed to maintain power in a circuit after an initial actuation, typically found in relays and starters to keep circuits closed.

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