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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