Which of the following distributions is suitable to model the length of time that elapses before the first telephone call is received by a switchboard?
A) Exponential
B) Normal
C) Poisson
D) Binomial
E) Hypergeometric

Question

Quizplus · Accepted Answer

The exponential distribution is commonly used to model the amount of time until an event occurs. In this case, the event is the first telephone call being received by the switchboard. The exponential distribution assumes that the probability of an event occurring during any fixed time interval is proportional to the length of the interval. This makes it a suitable choice for modeling the time until the first telephone call is received.

Which of the Following Distributions Is Suitable to Model the Length