Customer interarrival times at a store are exponentially distributed with rate 8 customers per hour. Customers are served by a single customer service representative (CSR), with an average service time of 5 minutes. Service times are also exponentially distributed. Which of the following statements are true? (Please tell me why option B is the right option) A. The average time spent waiting for the CSR is 15 minutes. B. The store is busy (has customers) 33% of the time C. The probability of having one or more customer in the store is 0.222. D. None of the answers are correct. E. The average number of customers in the store is 2.0.

Customer interarrival times at a store are exponentially distributed with rate 8 customers per hour. Customers are served by a single customer service representative (CSR), with an average service time of 5 minutes. Service times are also exponentially distributed. Which of the following statements are true? (Please tell me why option B is the right option) A. The average time spent waiting for the CSR is 15 minutes. B. The store is busy (has customers) 33% of the time C. The probability of having one or more customer in the store is 0.222. D. None of the answers are correct. E. The average number of customers in the store is 2.0.

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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