Customers arrive at a bank that has 1 teller and they wait in line on a first-come, first-served basis. customers arrive according to a poisson process with a rate of 14.5 per hour. it takes on average 4 minutes for a customer to be served by the teller. no customer leaves without going through service with the teller. the standard deviation of the service time is 2 minutes. how long is the waiting line (in terms of number of people), on average? (enter a number to a single decimal place.)

Select the correct answer. after the 2008 recession, the amount of reserves in the us banking system increased. because of federal reserve actions, required reserves increased from $44 billion to $60 billion. however, banks started holding more reserves than required. by january 2009, banks were holding $900 billion in excess reserves. the federal reserve started paying interest on the excess reserves that the banks held. what possible impact will these unused reserves have on the economy? a. the interest rate on loans will fall. b. people will demand more foreign goods. c. people will start borrowing more money. d. the economy will face inflation. e. foreign investments will increase.