60 customers/hr arrive randomly and randomly join one of 6 unpooled queues. each of the six employees can handle exactly 15 customer requests/hr (i. e., no variability). what percentage reduction in waiting time does pooling of all six queues into one queue offer?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Find 63% of 77. a. 0.485 b. 48.5 c.0.818 d.81.8