A multiple channel queuing system with a Poisson arrival rate, and an exponential service time distribution has an average arrival rate of 4 customers per hour and an average service time of 18 minutes per customer. A queuing system is described as unstable or overloaded if its utilization rate is greater than or equal to 1. For the system just described, what is the minimum number of servers required to retain stability i. e., to avoid overloading?

The market for corn in country a is highly competitive. at the current market price of $5/bushel there is a shortage of 100,000 bushels of corn in this country. media reports claim that the price of corn will rise drastically in the near future. according to these reports, the neighboring country b had witnessed a similar situation recently. at the same price, the shortage in country b was also 100,000 bushels and eventually the equilibrium price in b went up to $10/bushel. both countries are known to have equal number of corn producers and the market supply of corn is identical at all prices. this, combined with the fact that consumers in the two countries also have similar tastes and preferences, led the media to conclude that the price of corn in country a would soon be as high as $10/bushel. the new equilibrium price turns out to be below $10/bushel, what inferences can be drawn?

Select the correct answers. mila is at a flea market. she has $50 in her wallet. she decides that she will spend $15 on jewelry, $20 on a pair of jeans, $5 on a t-shirt, and $10 on something to eat. she likes a one-of-a-kind t-shirt, but the seller is not ready to sell it for less than $8. she thinks of five ways to deal with this situation. which two choices indicate a trade-off?

Consider the market for gasoline. suppose that, in a competitive market without government regulations, the equilibrium price of gasoline is $3.00 per gallon, and employees at gas stations earn $17.50 per hour. complete the following table by indicating whether each of the statements is an example of a price ceiling or a price floor and whether it results in a shortage or a surplus or has no effect on the price and quantity that prevail in the market. statement price control effect the government has instituted a legal minimum price of $3.40 per gallon for gasoline. the government prohibits gas stations from selling gasoline for more than $3.40 per gallon. due to new regulations, gas stations that would like to pay better wages in order to hire more workers are prohibited from paying more than $14.50 per hour.