Consider a post office with two employees and a single waiting line. On average, the inter-arrival time is 6 minutes. Standard deviation of inter-arrival time is 3.94 minutes. Average service time is 5 minutes. Standard deviation of service
time is 2.83 minutes.
a. What is the arrival rate? What is the service rate per employee?
b. What is the utilization of each employee?
c. What is the average time a customer waits for service?
d. What is the average number of customers waiting to be served?
e. What is the average number of customers being served?
f. What is the average number of customers in the system?
g. What is the average time a customer spends in the system?

Which of the following areas provides residents with close access to high-paying jobs and cultural attractions? a. the suburbs b. exurbs c. rural areas d. the city 2b2t

9. tax types: taxes are classified based on whether they are applied directly to income, called direct taxes, or to some other measurable performance characteristic of the firm, called indirect taxes. identify each of the following as a “direct tax,” an “indirect tax,” or something else: a. corporate income tax paid by a japanese subsidiary on its operating income b. royalties paid to saudi arabia for oil extracted and shipped to world markets c. interest received by a u. s. parent on bank deposits held in london d. interest received by a u. s. parent on a loan to a subsidiary in mexico e. principal repayment received by u. s. parent from belgium on a loan to a wholly owned subsidiary in belgium f. excise tax paid on cigarettes manufactured and sold within the united states g. property taxes paid on the corporate headquarters building in seattle h. a direct contribution to the international committee of the red cross for refugee relief i. deferred income tax, shown as a deduction on the u. s. parent’s consolidated income tax j. withholding taxes withheld by germany on dividends paid to a united kingdom parent corporation

When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars