Question

The Los Angeles County Fire Department’s Air Operations wing, headquartered in Pacoima, answers an average of 1800 emergency medical calls a year, or approximately five calls per day (source : Los Angeles Times). Assume that emergency calls meet all the Poisson conditions.
a. How likely is it that the time between emergency calls will be at least 3 hours?
b. How likely is it that the time between emergency calls will be less than 6 hours?
c. What is the average time (in minutes) between emergency calls?


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  • CreatedJuly 16, 2015
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