At a single-phase, multiple-channel service facility, customers arrive randomly. Statistical analysis of past data shows that the interarrival time has a mean of 20 minutes and a standard deviation of 4 minutes. The service time per customer has a mean of 15 minutes and a standard deviation of 5 minutes. The waiting cost is $200 per customer per hour. The server cost is $25 per server per hour. Assume general probability distribution and no buffer capacity restriction Required:
a. Find the optimal number of servers to be employed to minimize the total of waiting and server costs.
b. Find the average waiting time and the average total time through the system for the optimal case.
c. Find the cost per hour, average waiting time, and average flow time for one server if the probability distributions for the interarrival time and service time are assumed to be exponential and the mean values remain the same. .

About 20 years ago, sturdy light, inc., produced a sturdy, lightweight backpack in a market that was rapidly growing. sturdy light became a leader in this market. eventually, the backpack market reached the maturity stage and slowed down. however, by this time, sturdy light had developed a strong brand name and continued to steadily lead the market. which of the following describes this scenario? a. sturdy light was a star that developed into a cash cow. b. sturdy light was a question mark that developed into a star. c. sturdy light was a dog that developed into a question mark. d. sturdy light was a cash cow that developed into a star.

Sean lives in dallas and runs a business that sells boats. in an average year, he receives $722,000 from selling boats. of this sales revenue, he must pay the manufacturer a wholesale cost of $422,000; he also pays wages and utility bills totaling $268,000. he owns his showroom; if he chooses to rent it out, he will receive $2,000 in rent per year. assume that the value of this showroom does not depreciate over the year. also, if sean does not operate this boat business, he can work as a paralegal, receive an annual salary of $21,000 with no additional monetary costs, and rent out his showroom at the $2,000 per year rate. no other costs are incurred in running this boat business. identify each of sean's costs in the following table as either an implicit cost or an explicit cost of selling boats. implicit costexplicit costthe wages and utility bills that sean pays the rental income sean could receive if he chose to rent out his showroom the salary sean could earn if he worked as a paralegal the wholesale cost for the boats that sean pays the

Marque a alternativa que apresenta somente as opções de financiamento com recursos internos: a) lucros, venda de ativos e recursos próprios. b) lucros, venda de ativos e redução no capital de giro. c) lucros, venda de ativos e recursos de familiares. d) lucros, venda de ativos e prorrogação nos prazos para receber os pagamentos dos clientes. e) lucros, venda de ativos e aumento do estoque de mercadorias.