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Leticia and Rew Wholesale Fruit Distributors employ one worker whose job is to load fruit on outgoing company trucks. Trucks arrive at the loading gate
Leticia and Rew Wholesale Fruit Distributors employ one worker whose job is to load fruit on outgoing company trucks. Trucks arrive at the loading gate at an average of per day, or per hour, according to a Poisson distribution. The worker loads them at a rate of per hour, following approximately the exponential distribution in service times. a Determine the operating characteristics of this loading gate problem. What is the probability that there will be more than three trucks either being loaded or waiting? Leticia believes that adding a second fruit loader will substantially improve the firms efficiency. He estimates that a twoperson crew, acting like a singleserver system, at the loading gate will double the loading rate from trucks per hour to trucks per hour. b Analyze the effect on the queue of such a change an compare the results with those found in part a c Truck drivers working for Leticia and Rew are paid a salary of $ per hour on average. Fruit loaders receive about $ per hour. Truck drivers waiting in the queue or at the loading gate are drawing a salary but are productively idle and unable to generate revenue during that time. What would be the hourly cost savings to the firm associated with employing two loaders instead of one? d Leticia and Rew Wholesale Fruit Distributors are considering building a second platform or gate to speed the process of loading their fruit trucks. This will be even more efficient than simply hiring another loader to help out the first platform as in part c Assume that workers at each platform will be able to load trucks per hour each and that trucks will continue to arrive at the rate of per hour. Find the waiting lines new operating conditions. Is this new approach indeed speedier than the other twoperson crew considered?
Leticia and Rew Wholesale Fruit Distributors employ one worker whose job is to load fruit on outgoing company trucks. Trucks arrive at the loading gate at an average of per day, or per hour, according to a Poisson distribution. The worker loads them at a rate of per hour, following approximately the exponential distribution in service times.
a Determine the operating characteristics of this loading gate problem. What is the probability that there will be more than three trucks either being loaded or waiting?
Leticia believes that adding a second fruit loader will substantially improve the firms efficiency. He estimates that a twoperson crew, acting like a singleserver system, at the loading gate will double the loading rate from trucks per hour to trucks per hour.
b Analyze the effect on the queue of such a change an compare the results with those found in part a
c Truck drivers working for Leticia and Rew are paid a salary of $ per hour on average. Fruit loaders receive about $ per hour. Truck drivers waiting in the queue or at the loading gate are drawing a salary but are productively idle and unable to generate revenue during that time. What would be the hourly cost savings to the firm associated with employing two loaders instead of one?
d Leticia and Rew Wholesale Fruit Distributors are considering building a second platform or gate to speed the process of loading their fruit trucks. This will be even more efficient than simply hiring another loader to help out the first platform as in part c Assume that workers at each platform will be able to load trucks per hour each and that trucks will continue to arrive at the rate of per hour. Find the waiting lines new operating conditions. Is this new approach indeed speedier than the other twoperson crew considered?
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