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Use the Data Given Below to Answer the Following Question(s)

question 54

Essay

Use the data given below to answer the following question(s).
Customers arrive at an airline ticket counter at the rate of three customers per minute and can be served at the rate of 4 customers per minute.
-What is the probability that the system contains at least one customer?


Definitions:

Ingroup

A social group to which a person psychologically identifies as being a member, often contrasting with an "outgroup" which the person does not identify with.

Outgroup

An outgroup is a social group to which an individual does not identify, often viewed with less favor than the in-group or the group to which the individual belongs.

Ingroup

A group to which an individual belongs, feels a sense of identity, and derives a positive self-esteem from membership.

Outgroup

Any group an individual does not belong to or identify with.

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