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:

Learning

The acquisition of knowledge, skills, behaviors, or attitudes through experience, study, or teaching.

Conditioned Stimulus

A previously neutral stimulus that, after being repeatedly paired with an unconditioned stimulus, elicits a conditioned response.

Unconditioned Response

An innate, spontaneous response to a stimulus that happens without any previous instruction or training.

Conditioned Response

A learned response to a previously neutral stimulus due to conditioning.