If a second teller is added, the average time a customer spends in the queue= ______minutes (round your response to two decimal plces).

Neve Commercial Bark is the only bank in the town of York. Pennaytvania. On a typical Friday, an average of 8 customers per hour armive at the bark to trinsact business. There is one teief at ve bark, and the average time required to transact business is 3 minules. It is assumed that service tines may be described by the negative exponential distribution. A single line would be used, and the customet at the front of the line would go to the first avslabie bank tellor. It a single teller is used: a) The average time in the line =2 mirutes (round yout response to two decimal places). b) The average number in the ine = customers (round your response to two decimal places). o) The average time in the system = 5 minutes (round your response to two decinal places) d) The average number in the syotem =0 ecteb customers (round your response to two decinal placen) t) The probablity that the bank is empty =06 (round your response to tho decimal places) pat If a recond thiler is addes, the average time a customer ipends in the queun a _mitutes (round your resporse to two decinal plicess)