probablity

The consecutive interarrival times of a certain arrival process are i.i.d. random variables that are equally likely to be 5, 10, or 15 minutes. Find the expected value of the length of the interarrival time seen by an observer who arrives at some particular time, unrelated to the history of the process.

1. 👍 0
2. 👎 0
3. 👁 266
1. 11.66666666

1. 👍 3
2. 👎 0

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