Which model would you use to describe the probability that a call-center operator will make the first sale on the third call, assuming a constant probability of making a sale?
A)Binomial
B)Poisson
C)Hypergeometric
D)Geometric

Question

Quizplus · Accepted Answer

In this scenario, we're interested in finding the probability of the first success (sale) happening on a specific trial (third call). The Geometric distribution is the appropriate model for this situation, where we have a constant probability of success (making a sale) and we're interested in the number of trials it takes to achieve the first success. The Binomial distribution assumes a fixed number of trials and count of successes, whereas the Poisson distribution is used to model the number of events happening in a fixed interval of time or space, and the Hypergeometric distribution models drawing a fixed number of objects without replacement from a finite population, neither of which is applicable to this situation.

Which Model Would You Use to Describe the Probability That