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The undergraduate office at has 3 academic advisors. Students who want to be talk to an...

The undergraduate office at has 3 academic advisors. Students who want to be talk to an advisor arrive at the rate of 12 per hour according to a Poisson distribution. If all three advisors are busy, students wait for one of the advisors to become available. The average time that a student spends with an advisor is 10 minutes. The standard deviation of the time with an advisor is 2.4 minutes. On average, how many students are waiting to see an advisor?

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