Question $16(0\mathrm{.}5)$ A single channel queuing system has an average service time of $8$ minutes and an average time between arrivals of $10$ minutes. The arrival rate is: $7\mathrm{.}5$ per hour $12\mathrm{.}5$ per hour $8$ per hour $6$ per hour $10$ per hour Question $17(0\mathrm{.}5)$ A manager assembled the following information about an infinite source $($population$)$ waiting line system: $3$ servers, an average arrival rate of $10$ per hour, and an average service time of $15$ minutes. The average time in the system would be: $0\mathrm{.}067$ VW$04$ hr$.(4\mathrm{.}02$ min.$)0\mathrm{.}3511$ hr$.(21\mathrm{.}06$ min.$)0\mathrm{.}6011$hr$.(36\mathrm{.}06$ min.$)0\mathrm{.}8$ hr$.(48$ min.$)$ Question $18(0\mathrm{.}5)$ Offering an early bird" special at a restaurant to reduce waiting times during peak hours is an example of demand shifting queuing psychology service phasing service standardization outsourcing