2 . The total wait cost is __ dollars when there is only one clerk , and it will be reduced to only __ dollars if there are four clerks . ( Please only enter an integer and include no units .)
3 . The total cost of hiring is only __ dollars when there is only one clerk , and it will be increased to __ dollars if there are four clerks . ( Please only enter an integer and include no units .)
4 . To minimize the total expected cost based on your calculations above , the optimal number of clerks to have on duty each Sunday is ___________.
5 . The average number of trucks in the system is __ trucks . ( Please only enter an integer and include no units .)
6 . The average time per truck spent in the system is __ minutes . ( Please only enter an integer and include no units .)
7 . The utilization rate for the bin area is __ . ( Please round it to two decimal points .)
8 . The probability that there are more than 3 trucks in the system is about __. ( Please round it to two decimal points .)
9 . The total daily cost in the unloading process is ___ per day . ( Please only enter an integer and include no units .)
10 . Based on the above calculation , the net saving / loss of enlarging the bin is ___ dollars , hence the cooperative ____ proceed to enlarge the bin . ( Please round to an integer and include no units . Use a " -" sign in front the number to indicate a net loss , if there is a loss . Also , enter only " should " or " should not " in the second blanket .)