The Time Between Calls to an Emergency 911-Call Center Is

question 8

Multiple Choice

The time between calls to an emergency 911-call center is exponentially distributed with a mean time between calls of 645 seconds. Based on this information, what is the probability that the time between the next two calls is between 200 and 400 seconds?

• A) Approximately 0.47
• B) About 0.199
• C) About 0.747
• D) About 0.801

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Definitions:

Unit 1

Often a reference to the primary or initial segment in a series within educational materials or scientific classifications, indicating foundational knowledge or elements.

Mudstone

A fine-grained sedimentary rock formed from mud, characterized by a mixture of clay and silt-sized particles.

Stratigraphic Section

A representation of a vertical sequence of the layers of rocks in a particular area, showing their relative positions and compositions.

Basal Conglomerate

A sedimentary rock consisting of rounded clasts or pebbles embedded in a matrix of finer-grained material, often forming the base of a sedimentary sequence.