BA341 18th Edition Lecture 18 Outline of Last Lecture I Performance Metrics for M M 1 II Waiting Line with multiple servers III Solution via QCalc Outline of Current Lecture IV Ch 7 S Break even Analysis V QM A Decision Making Tools VI Module D Waiting Line Analysis Queueing Current Lecture Exam 3 Wednesday November 5th Review Topics Ch 7 S Break even analysis Single product BEP in units and dollars Use single product BEP approach to choose between alternatives given a certain level of customer demand Multi product BEP in dollars ability to find the sales volume for a given product at BE QM A Decision Making Tools Decision Trees DT o Alternatives and states of nature Reading building a payoff decision table Reading Decision Trees o Decision making under Uncertainty Identifying the best decision based on the following methods MaxiMax MaxiMin Equally likely These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o Decision making under Risk Computing the EMV of a decision alternative Identifying the best decision Module D Waiting Line Analysis Queueing M M 1 Queueing Systems o Single server o Infinite population o Poisson arrivals o Exponentially distributed service times ts service rate 1 ts o FIFO First In First Out o Required if is the opposite waiting line would be too long to withstand Module D Waiting Line Analysis Queueing continued M M 1 single server Queueing Systems Inputs arrival and service rates o Measured as jobs time unit Outputs o server utilization o average time in system Ws in queue Wq and in service ts all these are measured in time units o average number in system Ls in queue Lq and receiving service i e all these are measures in units e g customers jobs parts etc o Probability of the server being busy or idle o Probability that an arriving customer finds the system empty The questions about multiple servers
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