The reference desk of a university library receives requests for assistance. Assume that a Poisson probability distribution with an arrival rate of 8 requests per hour can be used to describe the arrival pattern and that service times follow an exponential probability distribution with a service rate of 9 requests per hour. 1. What is the probability that a new arrival has to wait for service? If required, round your answer to four decimal places. 2. What is the average number of requests that will be waiting for service? If required, round your answer to four decimal places.

The reference desk of a university library receives requests for assistance. Assume that a Poisson probability distribution with an arrival rate of 8 requests per hour can be used to describe the arrival pattern and that service times follow an exponential probability distribution with a service rate of 9 requests per hour. 1. What is the probability that a new arrival has to wait for service? If required, round your answer to four decimal places. 2. What is the average number of requests that will be waiting for service? If required, round your answer to four decimal places.

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Description: The reference desk of a university library receives requests for assistance. Assume that a Poisson probability distribution with an arrival rate of 8 requests per hour can be used to describe the arrival pattern and that service times follow an expon

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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