On average, how many cars are in the system?
In a bank drive-through, there is a single service window and room only for two cars to line-up to wait for service. The mean time between arrivals for drive through customers is 5 minutes. The mean time to complete a customer transaction is 3 minutes. The number of arrivals is distributed according to a Poisson distribution and the service times are exponentially distributed.
Answer: L = 0.9 cars
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Indicate whether the statement is true or false
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A) A hypothesis is an unproven statement or proposition about a factor or phenomenon that is of interest to the researcher. B) Hypotheses are declarative and can be tested empirically. C) It is possible to formulate hypotheses in all situations. D) An important role of a hypothesis is to suggest variables to be included in the research design.