​ Post Office

question 143

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 4:00 and 5:00 P.M.is exactly two.

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Definitions:

Breccia

A coarse-grained sedimentary rock composed of angular fragments of minerals or rocks cemented together, often formed in volcanic or faulting environments.

Rounded Clasts

Clasts or rock fragments that have been rounded by the mechanical weathering process, typically found in sedimentary rocks.

Sedimentary Deposit

Accumulation of minerals and organic particles that have been transported, settled, and compressed over time.

Breccia

A rock composed of broken fragments of minerals or rock cemented together by a fine-grained matrix.