A bank is going to select between two systems A and B which aids in measuring customers waiting time. Throughout the trial period, both systems showed the average waiting time of ten minutes. Type A showed a standard deviation of 2 minutes while type B showed a standard deviation of 4 minutes. Which of the two systems the bank should choose?
System A because in shows more consistency in the measuring the average waiting time.
System B because in shows more consistency in measuring the average waiting time.
Either because their mean waiting time is same in both systems.
Neither because the given information is not enough to make a decision