​ Post Office

question 152

Short Answer

​ Post office
The number of arrivals at a local post office between 3:00 and 5:00 P.M.has a Poisson distribution with a mean of 12. ​ ​
-{Post Office Narrative} Find the probability that the number of arrivals between 3:30 and 4:00 P.M.is at least 10.

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Definitions:

Universal Sets

In mathematics, a universal set is the set that contains all objects under consideration for a particular discussion or problem.

Evoked Sets

A group of relevant brands or products that a consumer recalls from memory when considering a purchasing decision in a particular category.

Retrieval Set

Includes those brands or stores that the consumer can readily bring forth from memory.

External Locus of Control

A psychological concept describing individuals who believe that their successes or failures result from external factors and forces beyond their personal control.