SOLVED

13) In queuing problems, which of the following probability distributions is typically used to describe the number of arrivals per unit of time? A) binomial B) normal C) Poisson D) exponential E) lognormal 14) In queuing problems, which of the following probability distributions is typically used to describe the time to perform the service? A) binomial B) normal C) Poisson D) negative exponential E) lognormal 15) The common measures of a queuing system’s performance include: A) probability that the service facility will be idle, average queue length, and probability that the waiting time will exceed a specified duration. B) average time each customer spends in the system, probability that the service system will be idle, and average time each customer spends in the queue. C) average queue length, maximum time a customer may spend in the queue, and the utilization factor for the system. D) average time each customer spends in the system, maximum queue length, and probability of a specific number of customers in the system. E) maximum queue length, maximum time a customer may spend in the queue, and average queue length. 16) The shopper who says to himself, “I’ve waited too long in this line. I don’t really need to buy this product today,” and leaves the store is an illustration of which element of arrival behavior? A) random arrival B) renege C) random departure D) balk E) frustration 17) A waiting line, or queuing, system has three parts, which are: A) distribution of arrival times, discipline while waiting, and distribution of service times. B) arrival rate, service rate, and utilization rate. C) arrival discipline, queue discipline, and service sequencing. D) arrivals or inputs, queue discipline or the waiting line itself, and the service facility. E) sequencing policy, penalty for reneging, and expediting of arrivals. 18) The source population is considered to be either ________ in its size. A) finite or infinite B) fixed or variable C) known or unknown D) random or scheduled E) small or large 19) The potential restaurant customer who says to her husband, “The line looks too long; let’s eat somewhere else,” is an illustration of which element of arrival behavior? A) first-in, first-out B) balk C) renege D) random departure E) frustration 20) Arrivals or inputs to a waiting-line system have characteristics that include: A) population size. B) population behavior. C) population’s statistical distribution. D) A and C E) A, B, and C 21) Which part of a waiting line has characteristics that involve a statistical distribution? A) arrivals or inputs B) the waiting line itself C) the service facility D) A and C E) A, B, and C 22) Which of the following is an example of a finite arrival population? A) copy machines in a copying shop that break down B) students at a large university registering for classes C) shoppers arriving at a supermarket D) cars arriving at a suburban car wash E) all of the above 23) Which of the following represents a customer that reneged due to the waiting line? A) A husband and wife decide to eat out instead after seeing the movie ticket line. B) A car drives past the first fast-food restaurant on Hamburger Row because the drive-through was full. C) A Black Friday shopper skipped one store because the line went around the building. D) A student ordered pizza online because the phone line was busy. E) A customer at a gas station went inside to buy a soda, but after waiting in line for a minute left the soda behind and went outside empty-handed.